CVE-2026-76887

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

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://gitlab.com/wireshark/wireshark/-/work_items/21423	Mitigation Vendor Advisory
https://www.wireshark.org/security/wnpa-sec-2026-69.html	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:wireshark:wireshark::::::::
	cpe:2.3:a:wireshark:wireshark::::::::

History

No history.

Information

Published : 2026-08-19 23:16

Updated : 2026-08-31 19:15

NVD link : CVE-2026-76887

Mitre link : CVE-2026-76887

CVE.ORG link : CVE-2026-76887

JSON object : View

Products Affected

wireshark

wireshark

CWE

CWE-122

Heap-based Buffer Overflow

{"id": "CVE-2026-76887", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76887", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-20T15:02:31.190590Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@gitlab.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.1, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.6}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@gitlab.com", "affectedData": [{"vendor": "Wireshark Foundation", "product": "Wireshark", "versions": [{"status": "affected", "version": "4.6.0", "lessThan": "4.6.8", "versionType": "semver"}, {"status": "affected", "version": "4.4.0", "lessThan": "4.4.18", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-19T23:16:19.677", "references": [{"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21423", "tags": ["Mitigation", "Vendor Advisory"], "source": "cve@gitlab.com"}, {"url": "https://www.wireshark.org/security/wnpa-sec-2026-69.html", "tags": ["Vendor Advisory"], "source": "cve@gitlab.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@gitlab.com", "description": [{"lang": "en", "value": "CWE-122"}]}], "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"}], "lastModified": "2026-08-31T19:15:38.533", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1EBB9C76-575E-4AAA-BECB-EDEA433DE515", "versionEndExcluding": "4.4.18", "versionStartIncluding": "4.4.0"}, {"criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "775548E6-9AC4-4B3A-82DD-61FF0A453FA4", "versionEndExcluding": "4.6.8", "versionStartIncluding": "4.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@gitlab.com"}