CVE-2026-76927: CWE-476: NULL Pointer Dereference in Wireshark Foundation Wireshark
A NULL pointer dereference vulnerability exists in the H.245 protocol dissector of Wireshark versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. This flaw can cause the application to crash, resulting in a denial of service condition. The vulnerability has a medium severity rating with a CVSS score of 4.7.
AI Analysis
Technical Summary
CVE-2026-76927 is a NULL pointer dereference vulnerability (CWE-476) in the H.245 protocol dissector component of Wireshark. It affects versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. Triggering this flaw causes the Wireshark application to crash, leading to denial of service. The vulnerability requires local access with high attack complexity and user interaction, and does not impact confidentiality or integrity.
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing the Wireshark application. There is no impact on confidentiality or integrity. The attack complexity is high, and user interaction is required, limiting the ease of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
CVE-2026-76927: CWE-476: NULL Pointer Dereference in Wireshark Foundation Wireshark
Description
A NULL pointer dereference vulnerability exists in the H.245 protocol dissector of Wireshark versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. This flaw can cause the application to crash, resulting in a denial of service condition. The vulnerability has a medium severity rating with a CVSS score of 4.7.
CVSS v3.1
Score 4.7medium
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-2026-76927 is a NULL pointer dereference vulnerability (CWE-476) in the H.245 protocol dissector component of Wireshark. It affects versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. Triggering this flaw causes the Wireshark application to crash, leading to denial of service. The vulnerability requires local access with high attack complexity and user interaction, and does not impact confidentiality or integrity.
Potential Impact
Exploitation of this vulnerability results in denial of service by crashing the Wireshark application. There is no impact on confidentiality or integrity. The attack complexity is high, and user interaction is required, limiting the ease of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:59:51.521Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a863747acd9273b49bc7c10
Added to database: 08/19/2026, 23:07:51 UTC
Last enriched: 08/19/2026, 23:25:24 UTC
Last updated: 08/19/2026, 23:28:20 UTC
Views: 4
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