CVE-2026-76926: CWE-617: Reachable Assertion in Wireshark Foundation Wireshark
CVE-2026-76926 is a low severity vulnerability in Wireshark affecting versions 4.6.0 and 4.4.0. It involves an abnormal exit (denial of service) triggered by the BUSMASTER file parser due to a reachable assertion issue (CWE-617). The vulnerability requires network access with high attack complexity and user interaction. No confidentiality or integrity impact is reported.
AI Analysis
Technical Summary
This vulnerability in Wireshark Foundation's Wireshark product is caused by a reachable assertion in the BUSMASTER file parser, leading to an abnormal program exit (denial of service). It affects specifically versions 4.6.0 and 4.4.0. The CVSS 3.1 base score is 3.1, indicating low severity, with attack vector network, high attack complexity, no privileges required, and user interaction required. There is no impact on confidentiality or integrity, only availability is affected. No patch or remediation level is currently indicated in the vendor or CVE data.
Potential Impact
The impact is limited to denial of service via abnormal exit of the Wireshark application when processing specially crafted BUSMASTER files. There is no reported impact on confidentiality or integrity of data. The vulnerability requires user interaction and has high attack complexity, reducing the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is indicated, users should avoid opening untrusted BUSMASTER files in affected versions. Monitor vendor communications for updates on patches or mitigations.
CVE-2026-76926: CWE-617: Reachable Assertion in Wireshark Foundation Wireshark
Description
CVE-2026-76926 is a low severity vulnerability in Wireshark affecting versions 4.6.0 and 4.4.0. It involves an abnormal exit (denial of service) triggered by the BUSMASTER file parser due to a reachable assertion issue (CWE-617). The vulnerability requires network access with high attack complexity and user interaction. No confidentiality or integrity impact is reported.
CVSS v3.1
Score 3.1low
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 in Wireshark Foundation's Wireshark product is caused by a reachable assertion in the BUSMASTER file parser, leading to an abnormal program exit (denial of service). It affects specifically versions 4.6.0 and 4.4.0. The CVSS 3.1 base score is 3.1, indicating low severity, with attack vector network, high attack complexity, no privileges required, and user interaction required. There is no impact on confidentiality or integrity, only availability is affected. No patch or remediation level is currently indicated in the vendor or CVE data.
Potential Impact
The impact is limited to denial of service via abnormal exit of the Wireshark application when processing specially crafted BUSMASTER files. There is no reported impact on confidentiality or integrity of data. The vulnerability requires user interaction and has high attack complexity, reducing the likelihood of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is indicated, users should avoid opening untrusted BUSMASTER files in affected versions. Monitor vendor communications for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:59:46.651Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a863747acd9273b49bc7c0e
Added to database: 08/19/2026, 23:07:51 UTC
Last enriched: 08/19/2026, 23:25:29 UTC
Last updated: 08/19/2026, 23:25:41 UTC
Views: 4
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