CVE-2026-15166: CWE-121: Stack-based Buffer Overflow in Wireshark Foundation Wireshark
IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
AI Analysis
Technical Summary
CVE-2026-15166 is a stack-based buffer overflow vulnerability in the IEEE 802.11 protocol dissector component of Wireshark Foundation's Wireshark software. It affects versions 4.4.0 to 4.4.16 and 4.6.0 to 4.6.6. The vulnerability allows an attacker to cause a denial of service by crashing the application when processing malformed IEEE 802.11 packets. The CVSS 3.1 base score is 5.5, indicating medium severity, with attack vector local, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in a denial of service by crashing Wireshark when it processes crafted IEEE 802.11 packets. There is no indication of confidentiality or integrity impact. 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 available, avoid processing untrusted IEEE 802.11 traffic with affected versions of Wireshark. Monitor the Wireshark Foundation's advisories for updates.
CVE-2026-15166: CWE-121: Stack-based Buffer Overflow in Wireshark Foundation Wireshark
Description
IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
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
CVE-2026-15166 is a stack-based buffer overflow vulnerability in the IEEE 802.11 protocol dissector component of Wireshark Foundation's Wireshark software. It affects versions 4.4.0 to 4.4.16 and 4.6.0 to 4.6.6. The vulnerability allows an attacker to cause a denial of service by crashing the application when processing malformed IEEE 802.11 packets. The CVSS 3.1 base score is 5.5, indicating medium severity, with attack vector local, low attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation results in a denial of service by crashing Wireshark when it processes crafted IEEE 802.11 packets. There is no indication of confidentiality or integrity impact. 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 available, avoid processing untrusted IEEE 802.11 traffic with affected versions of Wireshark. Monitor the Wireshark Foundation's advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-07-08T20:45:28.864Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4ebdf4c9d9e3dbe3bf8a03
Added to database: 07/08/2026, 21:15:32 UTC
Last enriched: 07/16/2026, 10:16:43 UTC
Last updated: 08/22/2026, 10:52:07 UTC
Views: 67
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