CVE-2026-76926: CWE-617: Reachable Assertion in Wireshark Foundation Wireshark
CVE-2026-76926 is a reachable assertion vulnerability in the BUSMASTER file parser component of Wireshark versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. This flaw can cause the application to exit abnormally, resulting in a denial of service condition. The vulnerability has a low severity rating and a CVSS score of 3.1. No known exploits are reported in the wild, and no official patch information is provided in the available data.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-76926 affects Wireshark's BUSMASTER file parser in versions 4.4.0 to 4.4.17 and 4.6.0 to 4.6.7. It is classified as a reachable assertion (CWE-617) that leads to abnormal termination of the parser, causing a denial of service. The CVSS v3.1 base score is 3.1, indicating low impact, with network attack vector, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in denial of service by causing the Wireshark application to exit unexpectedly when processing crafted BUSMASTER files. There is no impact on confidentiality or integrity reported. The vulnerability does not require privileges but does require user interaction and has a high attack complexity, limiting its exploitability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix links are provided, users should monitor Wireshark Foundation advisories for updates. Until a fix is available, avoid opening untrusted BUSMASTER files to reduce risk.
CVE-2026-76926: CWE-617: Reachable Assertion in Wireshark Foundation Wireshark
Description
CVE-2026-76926 is a reachable assertion vulnerability in the BUSMASTER file parser component of Wireshark versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. This flaw can cause the application to exit abnormally, resulting in a denial of service condition. The vulnerability has a low severity rating and a CVSS score of 3.1. No known exploits are reported in the wild, and no official patch information is provided in the available data.
CVSS v3.1
Score 3.1low
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
The vulnerability identified as CVE-2026-76926 affects Wireshark's BUSMASTER file parser in versions 4.4.0 to 4.4.17 and 4.6.0 to 4.6.7. It is classified as a reachable assertion (CWE-617) that leads to abnormal termination of the parser, causing a denial of service. The CVSS v3.1 base score is 3.1, indicating low impact, with network attack vector, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in denial of service by causing the Wireshark application to exit unexpectedly when processing crafted BUSMASTER files. There is no impact on confidentiality or integrity reported. The vulnerability does not require privileges but does require user interaction and has a high attack complexity, limiting its exploitability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix links are provided, users should monitor Wireshark Foundation advisories for updates. Until a fix is available, avoid opening untrusted BUSMASTER files to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:59:46.651Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a863747acd9273b49bc7c0e
Added to database: 08/19/2026, 23:07:51 UTC
Last enriched: 09/11/2026, 05:48:06 UTC
Last updated: 10/02/2026, 04:57:52 UTC
Views: 64
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