CVE-2026-76922: CWE-476: NULL Pointer Dereference in Wireshark Foundation Wireshark
Description
Bluetooth BR/EDR FHS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
CVSS v3.1
Score 5.5medium
Affected software
Wireshark Foundation
Wireshark
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-2026-76922 is a medium severity vulnerability in Wireshark Foundation's Wireshark software affecting versions >=4.4.0 <4.4.18 and >=4.6.0 <4.6.8. The issue is a NULL pointer dereference in the Bluetooth BR/EDR FHS protocol dissector, which can be triggered to crash the application, causing denial of service. The CVSS 3.1 score is 5.5 with vector AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, indicating local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, but high availability impact.
Potential Impact
Successful exploitation causes a denial of service by crashing Wireshark, impacting availability. There is no confidentiality or integrity impact. The attack requires local access and user interaction.
Mitigation Recommendations
No explicit patch or vendor advisory is provided in the input data. Patch status is not yet confirmed — check the Wireshark Foundation vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted Bluetooth BR/EDR FHS protocol data or use a version outside the affected ranges.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:44:35.540Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8633c7acd9273b49b8ad3c
Added to database: 08/19/2026, 22:52:55 UTC
Last enriched: 09/18/2026, 23:35:04 UTC
Last updated: 10/04/2026, 10:02:29 UTC
Views: 36
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