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 (CVE-2026-76887)
A denial of service vulnerability exists in the Wireshark dissection engine affecting versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. The issue causes a crash when processing certain inputs, leading to service disruption. The vulnerability is identified as CVE-2026-76887 and is classified as low severity with a CVSS score of 3.1.
AI Analysis
Technical Summary
CVE-2026-76887 is a denial of service vulnerability in Wireshark's dissection engine affecting versions 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18. The flaw causes the application to crash when processing specific malformed packets, resulting in a loss of availability. The vulnerability is categorized under CWE-122 (Heap-based Buffer Overflow). No known exploits are reported in the wild, and no patch or remediation information is provided in the available data.
Potential Impact
The vulnerability allows an unauthenticated attacker to cause a denial of service by crashing the Wireshark application when it processes crafted network traffic. This results in temporary loss of availability of the Wireshark service or tool. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid processing untrusted or suspicious network traffic with affected versions of Wireshark to reduce the risk of denial of service.
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 (CVE-2026-76887)
Description
A denial of service vulnerability exists in the Wireshark dissection engine affecting versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. The issue causes a crash when processing certain inputs, leading to service disruption. The vulnerability is identified as CVE-2026-76887 and is classified as low severity with a CVSS score of 3.1.
CVSS v3.1
Score 3.1low
Affected software
pkg:github/wireshark/wiresharkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76887 is a denial of service vulnerability in Wireshark's dissection engine affecting versions 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18. The flaw causes the application to crash when processing specific malformed packets, resulting in a loss of availability. The vulnerability is categorized under CWE-122 (Heap-based Buffer Overflow). No known exploits are reported in the wild, and no patch or remediation information is provided in the available data.
Potential Impact
The vulnerability allows an unauthenticated attacker to cause a denial of service by crashing the Wireshark application when it processes crafted network traffic. This results in temporary loss of availability of the Wireshark service or tool. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid processing untrusted or suspicious network traffic with affected versions of Wireshark to reduce the risk of denial of service.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8wh7-4hr7-v35q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-76887"]
- Ecosystems
- []
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a870a7eacd9273b49b59778
Added to database: 08/20/2026, 14:09:02 UTC
Last enriched: 08/20/2026, 14:40:07 UTC
Last updated: 08/20/2026, 21:51:58 UTC
Views: 3
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