{"containers": {"cna": {"title": "Microsoft Exchange Server Remote Code Execution Vulnerability", "datePublic": "2021-03-02T16:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0221.018"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_22:*:*:*:*:*:*", "versionStartIncluding": "15.00.0", "versionEndExcluding": "15.00.1473.006"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_2:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0397.011"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_13:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1779.008"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_23:*:*:*:*:*:*", "versionStartIncluding": "15.00.0", "versionEndExcluding": "15.00.1497.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_3:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0464.015"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_14:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1847.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_4:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0659.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_15:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1913.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_5:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0595.008"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_6:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0529.013"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_16:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1979.008"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_17:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.2044.013"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_7:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0721.013"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_18:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.2106.013"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_19:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.2176.009"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_8:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.02.0792.010"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_1:*:*:*:*:*:*", "versionStartIncluding": "15.00.0", "versionEndExcluding": "15.00.0847.064"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_21:*:*:*:*:*:*", "versionStartIncluding": "15.00.0", "versionEndExcluding": "15.00.1395.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_12:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1713.010"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_8:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1415.010"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_1:*:*:*:*:*:*", "versionStartIncluding": "15.02.0", "versionEndExcluding": "15.01.1979.006"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_9:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1466.016"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_10:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1531.012"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_11:*:*:*:*:*:*", "versionStartIncluding": "15.01.0", "versionEndExcluding": "15.01.1591.018"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 21", "platforms": ["x64-based Systems"], "versions": [{"version": "15.00.0", "lessThan": "15.00.1395.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 22", "platforms": ["x64-based Systems"], "versions": [{"version": "15.00.0", "lessThan": "15.00.1473.006", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 23", "platforms": ["x64-based Systems"], "versions": [{"version": "15.00.0", "lessThan": "15.00.1497.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Service Pack 1", "platforms": ["x64-based Systems"], "versions": [{"version": "15.00.0", "lessThan": "15.00.0847.064", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 10", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1531.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 11", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1591.018", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 12", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1713.010", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 13", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1779.008", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 14", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1847.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 15", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1913.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 16", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1979.008", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 17", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.2044.013", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 18", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.2106.013", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 19", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.2176.009", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 8", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1415.010", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 9", "platforms": ["x64-based Systems"], "versions": [{"version": "15.01.0", "lessThan": "15.01.1466.016", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0221.018", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 1", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.01.1979.006", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 2", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0397.011", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 3", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0464.015", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 4", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0659.012", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 5", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0595.008", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 6", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0529.013", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 7", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0721.013", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 8", "platforms": ["x64-based Systems"], "versions": [{"version": "15.02.0", "lessThan": "15.02.0792.010", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Microsoft Exchange Server Remote Code Execution Vulnerability", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "Remote Code Execution", "lang": "en-US", "type": "Impact"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-19T16:30:49.357Z"}, "references": [{"name": "Microsoft Exchange Server Remote Code Execution Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27065"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C"}}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:40:47.231Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2021-03-01T00:00:00+00:00", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2021-27065"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065"}}}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065", "tags": ["government-resource"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "timeline": [{"time": "2021-11-03T00:00:00.000Z", "lang": "en", "value": "CVE-2021-27065 added to CISA KEV"}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-12T03:55:33.978Z"}}]}, "cveMetadata": {"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "assignerShortName": "microsoft", "cveId": "CVE-2021-27065", "datePublished": "2021-03-02T23:55:28.000Z", "dateReserved": "2021-02-10T00:00:00.000Z", "dateUpdated": "2026-08-19T16:30:49.357Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065", "tags": ["x_refsource_MISC", "x_transferred"]}, {"url": "http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html", "tags": ["x_refsource_MISC", "x_transferred"]}, {"url": "http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:40:47.231Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-27065", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-04T19:15:28.165773Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065"}}}], "timeline": [{"lang": "en", "time": "2021-11-03T00:00:00.000Z", "value": "CVE-2021-27065 added to CISA KEV"}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065", "tags": ["government-resource"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-04T19:15:40.350Z"}}], "cna": {"title": "Microsoft Exchange Server Remote Code Execution Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 22", "versions": [{"status": "affected", "version": "15.00.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 2", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 13", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 23", "versions": [{"status": "affected", "version": "15.00.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 3", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 14", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 4", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 15", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 5", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 6", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 16", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 17", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 7", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 18", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 19", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 8", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_1:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Service Pack 1", "versions": [{"status": "affected", "version": "15.00.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2013 Cumulative Update 21", "versions": [{"status": "affected", "version": "15.00.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 12", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 8", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2019 Cumulative Update 1", "versions": [{"status": "affected", "version": "15.02.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 9", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 10", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"cpes": ["cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Exchange Server 2016 Cumulative Update 11", "versions": [{"status": "affected", "version": "15.01.0", "lessThan": "publication", "versionType": "custom"}], "platforms": ["x64-based Systems"]}], "datePublic": "2021-03-02T08:00:00.000Z", "references": [{"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065", "tags": ["x_refsource_MISC"]}, {"url": "http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html", "tags": ["x_refsource_MISC"]}, {"url": "http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en-US", "value": "Microsoft Exchange Server Remote Code Execution Vulnerability"}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "Impact", "description": "Remote Code Execution"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2023-12-29T20:09:28.788Z"}}}, "cveMetadata": {"cveId": "CVE-2021-27065", "state": "PUBLISHED", "dateUpdated": "2026-08-12T03:55:33.978Z", "dateReserved": "2021-02-10T00:00:00.000Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2021-03-02T23:55:28.000Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2013 Cumulative Update 21", "vendor": "Microsoft", "versions": [{"lessThan": "15.00.1395.012", "status": "affected", "version": "15.00.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2013 Cumulative Update 22", "vendor": "Microsoft", "versions": [{"lessThan": "15.00.1473.006", "status": "affected", "version": "15.00.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2013 Cumulative Update 23", "vendor": "Microsoft", "versions": [{"lessThan": "15.00.1497.012", "status": "affected", "version": "15.00.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2013 Service Pack 1", "vendor": "Microsoft", "versions": [{"lessThan": "15.00.0847.064", "status": "affected", "version": "15.00.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 10", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1531.012", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 11", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1591.018", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 12", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1713.010", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 13", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1779.008", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 14", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1847.012", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 15", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1913.012", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 16", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1979.008", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 17", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.2044.013", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 18", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.2106.013", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 19", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.2176.009", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 8", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1415.010", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2016 Cumulative Update 9", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1466.016", "status": "affected", "version": "15.01.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0221.018", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 1", "vendor": "Microsoft", "versions": [{"lessThan": "15.01.1979.006", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 2", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0397.011", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 3", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0464.015", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 4", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0659.012", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 5", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0595.008", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 6", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0529.013", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 7", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0721.013", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}, {"platforms": ["x64-based Systems"], "product": "Microsoft Exchange Server 2019 Cumulative Update 8", "vendor": "Microsoft", "versions": [{"lessThan": "15.02.0792.010", "status": "affected", "version": "15.02.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "cisaActionDue": "2022-05-03", "cisaExploitAdd": "2021-11-03", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Microsoft Exchange Server Remote Code Execution Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*", "matchCriteriaId": "B560F8FD-068E-4A16-A37F-A62DCE88FCF2", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*", "matchCriteriaId": "751FD35F-2ECD-4B75-9589-988CC6AD3058", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*", "matchCriteriaId": "DA166F2A-D83B-4D50-AD0B-668D813E0585", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:*", "matchCriteriaId": "0C21F84B-E99C-451D-9EAF-6352FD2B0EAF", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*", "matchCriteriaId": "63E362CB-CF75-4B7E-A4B1-D6D84AFCBB68", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*", "matchCriteriaId": "9BE04790-85A2-4078-88CE-1787BC5172E7", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*", "matchCriteriaId": "CCF101BE-27FD-4E2D-A694-C606BD3D1ED7", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*", "matchCriteriaId": "4DF5BDB5-205D-4B64-A49A-0152AFCF4A13", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*", "matchCriteriaId": "55284CF7-0D04-4216-83FE-4B1F9CA94207", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*", "matchCriteriaId": "CA2CE223-AA49-49E6-AC32-59270EFF55AD", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*", "matchCriteriaId": "4830D6A9-AF74-480C-8F69-8648CD619980", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*", "matchCriteriaId": "079E1E3F-FF25-4B0D-AC98-191D6455A014", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*", "matchCriteriaId": "29805EC7-6403-44B9-91EC-109C087E98EB", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*", "matchCriteriaId": "28FCA0E8-7D27-4746-9731-91B834CA3E64", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*", "matchCriteriaId": "075E907F-AF2F-4C31-86C7-51972BE412A1", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:-:*:*:*:*:*:*", "matchCriteriaId": "40D8A6DB-9225-4A3F-AD76-192F6CCCF002", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*", "matchCriteriaId": "051DE6C4-7456-4C42-BC51-253208AADB4E", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*", "matchCriteriaId": "EE320413-D2C9-4B28-89BF-361B44A3F0FF", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*", "matchCriteriaId": "104F96DC-E280-4E0A-8586-B043B55888C2", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*", "matchCriteriaId": "73B3B3FE-7E85-4B86-A983-2C410FFEF4B8", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*", "matchCriteriaId": "8A9FB275-7F17-48B2-B528-BE89309D2AF5", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*", "matchCriteriaId": "D4AB3C25-CEA8-4D66-AEE4-953C8B17911A", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*", "matchCriteriaId": "36CE5C6D-9A04-41F5-AE7C-265779833649", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*", "matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft Exchange Server Remote Code Execution Vulnerability"}, {"lang": "es", "value": "Una Vulnerabilidad de Ejecuci\u00f3n de c\u00f3digo remota de Microsoft Exchange Server. Este ID de CVE es diferente de CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27078"}], "id": "CVE-2021-27065", "lastModified": "2026-08-19T19:22:38.797", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-27065", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2021-03-01T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2021-03-03T00:15:12.307", "references": [{"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27065"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27065"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27065"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-22"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{}