{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-95393", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-09-22T05:34:31.672Z", "datePublished": "2026-09-29T09:33:03.014Z", "dateUpdated": "2026-09-29T09:33:03.014Z"}, "containers": {"cna": {"title": "Heap-based Buffer Overflow in Wireshark", "descriptions": [{"lang": "en", "value": "CSN.1 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service"}], "affected": [{"vendor": "Wireshark Foundation", "product": "Wireshark", "repo": "https://gitlab.com/wireshark/wireshark", "versions": [{"version": "4.6.0", "status": "affected", "lessThan": "4.6.9", "versionType": "semver"}, {"version": "4.4.0", "status": "affected", "lessThan": "4.4.19", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-122: Heap-based Buffer Overflow", "cweId": "CWE-122", "type": "CWE"}]}], "references": [{"url": "https://www.wireshark.org/security/wnpa-sec-2026-99.html"}, {"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21510"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM"}}], "solutions": [{"lang": "en", "value": "Upgrade to version 4.6.9 or above"}], "credits": [{"lang": "en", "value": "Security research assessment of Wireshark internals (Feng Xue)", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-09-29T09:33:03.014Z"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Wireshark", "repo": "https://gitlab.com/wireshark/wireshark", "vendor": "Wireshark Foundation", "versions": [{"lessThan": "4.6.9", "status": "affected", "version": "4.6.0", "versionType": "semver"}, {"lessThan": "4.4.19", "status": "affected", "version": "4.4.0", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CSN.1 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service"}], "id": "CVE-2026-95393", "lastModified": "2026-09-29T10:17:15.610", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "cve@gitlab.com", "type": "Secondary"}]}, "published": "2026-09-29T10:17:15.610", "references": [{"source": "cve@gitlab.com", "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21510"}, {"source": "cve@gitlab.com", "url": "https://www.wireshark.org/security/wnpa-sec-2026-99.html"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "cve@gitlab.com", "type": "Primary"}]}

{"bugzilla": {"description": "wireshark: Heap-based Buffer Overflow in Wireshark", "id": "2543030", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543030"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in Wireshark's CSN.1 (Concrete Syntax Notation One) protocol dissector. By transmitting malformed network packets or providing a crafted packet capture file, an attacker can trigger a heap-based buffer overflow. This vulnerability causes the application to crash, leading to a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-95393", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-29T09:33:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-95393\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-95393\nhttps://gitlab.com/wireshark/wireshark/-/work_items/21510\nhttps://www.wireshark.org/security/wnpa-sec-2026-99.html"], "threat_severity": "Moderate"}

{}