{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-76887", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-08-19T22:34:39.934Z", "datePublished": "2026-08-19T22:35:29.925Z", "dateUpdated": "2026-08-20T15:04:35.223Z"}, "containers": {"cna": {"title": "Heap-based Buffer Overflow in Wireshark", "descriptions": [{"lang": "en", "value": "Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service"}], "affected": [{"vendor": "Wireshark Foundation", "product": "Wireshark", "versions": [{"version": "4.6.0", "status": "affected", "lessThan": "4.6.8", "versionType": "semver"}, {"version": "4.4.0", "status": "affected", "lessThan": "4.4.18", "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-2026-69.html"}, {"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21423"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 3.1, "baseSeverity": "LOW"}}], "solutions": [{"lang": "en", "value": "Upgrade to version 4.6.8 or above"}], "credits": [{"lang": "en", "value": "Daniel Birtwhistle", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-08-19T22:35:29.925Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-20T15:02:31.190590Z", "id": "CVE-2026-76887", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-08-20T15:04:35.223Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Wireshark", "vendor": "Wireshark Foundation", "versions": [{"lessThan": "4.6.8", "status": "affected", "version": "4.6.0", "versionType": "semver"}, {"lessThan": "4.4.18", "status": "affected", "version": "4.4.0", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service"}], "id": "CVE-2026-76887", "lastModified": "2026-08-28T15:44:39.323", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "cve@gitlab.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76887", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-20T15:02:31.190590Z", "version": "2.0.3"}}]}, "published": "2026-08-19T23:16:19.677", "references": [{"source": "cve@gitlab.com", "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21423"}, {"source": "cve@gitlab.com", "url": "https://www.wireshark.org/security/wnpa-sec-2026-69.html"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "cve@gitlab.com", "type": "Secondary"}]}

{"bugzilla": {"description": "wireshark: Wireshark: Denial of service via heap-based buffer overflow in dissection engine", "id": "2520081", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520081"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-120", "details": ["Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service", "A flaw was found in Wireshark. This heap-based buffer overflow vulnerability in the dissection engine could allow a remote attacker to cause a denial of service. Exploitation requires a user to process a specially crafted network packet, leading to a crash of the application."], "mitigation": {"lang": "en:us", "value": "Do not open untrusted packet capture files or capture traffic from untrusted networks with Wireshark."}, "name": "CVE-2026-76887", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-19T22:35:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-76887\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-76887\nhttps://gitlab.com/wireshark/wireshark/-/work_items/21423\nhttps://www.wireshark.org/security/wnpa-sec-2026-69.html"], "statement": "A flaw was found in the dissection engine in Wireshark versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship an affected version of Wireshark.", "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.6.0,4.6.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.4.0,4.4.18)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Wireshark", "source": "cna", "vendor": "Wireshark Foundation"}, "product": "wireshark", "vendor": "wireshark"}], "created": "2026-08-19T23:45:04.853200+00:00", "updated": "2026-08-22T02:15:03.743291+00:00", "vendors": ["wireshark", "wireshark$PRODUCT$wireshark"]}