{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77558", "assignerOrgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "state": "PUBLISHED", "assignerShortName": "Ubiquiti", "dateReserved": "2026-08-20T20:32:48.221Z", "datePublished": "2026-09-22T18:43:14.612Z", "dateUpdated": "2026-09-22T19:33:53.966Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "shortName": "Ubiquiti", "dateUpdated": "2026-09-22T18:43:14.612Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds read", "type": "CWE"}]}], "affected": [{"vendor": "Ubiquiti Inc", "product": "Dream Machines", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Firewalls", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Routers", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Cloud Gateways", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Wall", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Express", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0.21", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Express 7", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "UniFi Gateways", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.26", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device."}]}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-22T19:33:45.709368Z", "id": "CVE-2026-77558", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-22T19:33:53.966Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-77558", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-22T19:33:45.709368Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-22T19:33:51.306Z"}}], "cna": {"source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Ubiquiti Inc", "product": "Dream Machines", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Enterprise Firewalls", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Routers", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Cloud Gateways", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Dream Wall", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Express", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0.21", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "Express 7", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.31", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Ubiquiti Inc", "product": "UniFi Gateways", "versions": [{"status": "affected", "version": "0", "lessThan": "5.1.26", "versionType": "semver"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c"}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.", "supportingMedia": [{"type": "text/html", "value": "A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds read"}]}], "providerMetadata": {"orgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "shortName": "Ubiquiti", "dateUpdated": "2026-09-22T18:43:14.612Z"}}}, "cveMetadata": {"cveId": "CVE-2026-77558", "state": "PUBLISHED", "dateUpdated": "2026-09-22T19:33:53.966Z", "dateReserved": "2026-08-20T20:32:48.221Z", "assignerOrgId": "fe490ce8-0395-4072-90d8-2707e1bdf984", "datePublished": "2026-09-22T18:43:14.612Z", "assignerShortName": "Ubiquiti"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Dream Machines", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Enterprise Firewalls", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Dream Routers", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Cloud Gateways", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Dream Wall", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Express", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "4.0.21", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Express 7", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.31", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "UniFi Gateways", "vendor": "Ubiquiti Inc", "versions": [{"lessThan": "5.1.26", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "fe490ce8-0395-4072-90d8-2707e1bdf984"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious actor with access to the network could exploit an Out-of-bounds Read vulnerability found in certain UniFi gateway devices to execute a Denial of Service (DoS) attack on the device."}], "id": "CVE-2026-77558", "lastModified": "2026-09-22T20:17:08.680", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-77558", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-22T19:33:45.709368Z", "version": "2.0.3"}}]}, "published": "2026-09-22T19:16:51.980", "references": [{"source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-069-069/07e367a7-edec-4d85-a058-f97e5ce9ac9c"}], "sourceIdentifier": "fe490ce8-0395-4072-90d8-2707e1bdf984", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "fe490ce8-0395-4072-90d8-2707e1bdf984", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Cloud Gateways", "source": "cna", "vendor": "Ubiquiti Inc"}, "product": "cloud_gateways", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "dream_machines", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "dream_routers", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "dream_wall", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Enterprise Firewalls", "source": "cna", "vendor": "Ubiquiti Inc"}, "product": "enterprise_firewalls", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.0.21)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "express", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.31)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "express_7", "vendor": "ubiquiti"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1.26)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "unifi_gateways", "vendor": "ubiquiti"}], "created": "2026-09-22T20:00:13.160335+00:00", "title": "Out-of-Bounds Read in UniFi Gateway Firmware Enables Device Denial of Service", "updated": "2026-09-29T13:21:00.775320+00:00", "vendors": ["ubiquiti", "ubiquiti$PRODUCT$cloud_gateways", "ubiquiti$PRODUCT$dream_machines", "ubiquiti$PRODUCT$dream_routers", "ubiquiti$PRODUCT$dream_wall", "ubiquiti$PRODUCT$enterprise_firewalls", "ubiquiti$PRODUCT$express", "ubiquiti$PRODUCT$express_7", "ubiquiti$PRODUCT$unifi_gateways"]}