CVE-2026-76923: CWE-125: Out-of-bounds Read in Wireshark Foundation Wireshark
Description
CVE-2026-76923 is an out-of-bounds read vulnerability in the Bluetooth HFP Profile 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 5.5.
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
This vulnerability involves an out-of-bounds read (CWE-125) in the Bluetooth Hands-Free Profile (HFP) protocol dissector component of Wireshark. Affected versions include 4.4.0 up to and including 4.4.18 and 4.6.0 up to and including 4.6.7. The flaw can be triggered remotely by processing crafted Bluetooth HFP packets, causing the Wireshark application to crash and deny service. There is no indication of confidentiality or integrity impact. The CVSS 3.1 vector is AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, indicating local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, and high impact on availability.
Potential Impact
Successful exploitation causes a denial of service by crashing the Wireshark application when parsing malformed Bluetooth HFP protocol data. There is no impact on confidentiality or integrity. The attack requires local access and user interaction to trigger the crash.
Mitigation Recommendations
No official patch or fix information is provided in the available 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 HFP traffic with affected versions of Wireshark to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:44:40.531Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8633c7acd9273b49b8ad3e
Added to database: 08/19/2026, 22:52:55 UTC
Last enriched: 09/11/2026, 05:49:01 UTC
Last updated: 10/04/2026, 10:02:29 UTC
Views: 42
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