CVE-2026-76922: CWE-476: NULL Pointer Dereference in Wireshark Foundation Wireshark
CVE-2026-76922 is a medium severity vulnerability in Wireshark affecting versions 4.4.0 and 4.6.0. It involves a NULL pointer dereference in the Bluetooth BR/EDR FHS protocol dissector, which can cause the application to crash and result in a denial of service. The vulnerability requires local access and user interaction to trigger. There is no official patch or remediation information currently available.
AI Analysis
Technical Summary
This vulnerability is a NULL pointer dereference (CWE-476) in the Bluetooth BR/EDR FHS protocol dissector component of Wireshark versions 4.4.0 and 4.6.0. When processing malformed Bluetooth protocol data, the application may crash, leading to denial of service. The CVSS 3.1 base score is 5.5, reflecting medium severity with attack vector local, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes Wireshark to crash, resulting in denial of service. There is no confidentiality or integrity impact. The attack requires local access and user interaction, limiting the scope of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is currently available. Users should monitor Wireshark Foundation advisories for updates and avoid processing untrusted Bluetooth BR/EDR FHS protocol data until a fix is released.
CVE-2026-76922: CWE-476: NULL Pointer Dereference in Wireshark Foundation Wireshark
Description
CVE-2026-76922 is a medium severity vulnerability in Wireshark affecting versions 4.4.0 and 4.6.0. It involves a NULL pointer dereference in the Bluetooth BR/EDR FHS protocol dissector, which can cause the application to crash and result in a denial of service. The vulnerability requires local access and user interaction to trigger. There is no official patch or remediation information currently available.
CVSS v3.1
Score 5.5medium
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
This vulnerability is a NULL pointer dereference (CWE-476) in the Bluetooth BR/EDR FHS protocol dissector component of Wireshark versions 4.4.0 and 4.6.0. When processing malformed Bluetooth protocol data, the application may crash, leading to denial of service. The CVSS 3.1 base score is 5.5, reflecting medium severity with attack vector local, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes Wireshark to crash, resulting in denial of service. There is no confidentiality or integrity impact. The attack requires local access and user interaction, limiting the scope of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is currently available. Users should monitor Wireshark Foundation advisories for updates and avoid processing untrusted Bluetooth BR/EDR FHS protocol data until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:44:35.540Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8633c7acd9273b49b8ad3c
Added to database: 08/19/2026, 22:52:55 UTC
Last enriched: 08/19/2026, 23:09:21 UTC
Last updated: 08/20/2026, 01:55:42 UTC
Views: 6
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