Denial of Service Vulnerability in Wireshark by The Wireshark Foundation
CVE-2026-15166

5.5MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
8 July 2026

What is CVE-2026-15166?

The Wireshark tool suffers from a vulnerability in its IEEE 802.11 protocol dissector that can lead to a denial of service. When processing specific packet data in versions 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16, Wireshark may crash, potentially disrupting network monitoring and analysis. This critical weakness reinforces the importance of maintaining current software versions to ensure the highest level of security. For more information on the vulnerability and suggested mitigations, please refer to the security advisory provided by the Wireshark Foundation.

Affected Version(s)

Wireshark 4.6.0 < 4.6.7

Wireshark 4.4.0 < 4.4.17

References

https://www.wireshark.org/security/wnpa-sec-2026-57.html
https://gitlab.com/wireshark/wireshark/-/work_items/21391

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Claude and Ada Logics
.