CVE-2026-6538: CWE-121: Stack-based Buffer Overflow in Wireshark Foundation Wireshark
BEEP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
AI Analysis
Technical Summary
CVE-2026-6538 is a stack-based buffer overflow vulnerability in the BEEP protocol dissector component of Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. This vulnerability can be triggered to cause the Wireshark application to crash, leading to denial of service. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and impact limited to availability. The vendor has not published a patch or official remediation at this time, and no exploits are known to be active in the wild.
Potential Impact
Successful exploitation results in denial of service by crashing Wireshark when processing BEEP protocol data. There is no impact on confidentiality or integrity reported. The vulnerability requires local access and user interaction to trigger.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid processing untrusted BEEP protocol traffic in affected Wireshark versions. Monitor vendor communications for updates on patches or mitigations.
CVE-2026-6538: CWE-121: Stack-based Buffer Overflow in Wireshark Foundation Wireshark
Description
BEEP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6538 is a stack-based buffer overflow vulnerability in the BEEP protocol dissector component of Wireshark versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. This vulnerability can be triggered to cause the Wireshark application to crash, leading to denial of service. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and impact limited to availability. The vendor has not published a patch or official remediation at this time, and no exploits are known to be active in the wild.
Potential Impact
Successful exploitation results in denial of service by crashing Wireshark when processing BEEP protocol data. There is no impact on confidentiality or integrity reported. The vulnerability requires local access and user interaction to trigger.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid processing untrusted BEEP protocol traffic in affected Wireshark versions. Monitor vendor communications for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-04-17T15:06:42.676Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f2f4eecbff5d8610970cc1
Added to database: 4/30/2026, 6:21:34 AM
Last enriched: 4/30/2026, 6:36:40 AM
Last updated: 4/30/2026, 9:51:31 AM
Views: 6
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