Denial of Service Vulnerability in Wireshark by the Wireshark Foundation
CVE-2026-15165

5.5MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
8 July 2026

What is CVE-2026-15165?

A flaw in Wireshark versions 4.6.0 to 4.6.6 related to the TLS ECH decryptor can cause the application to crash, leading to potential denial of service. This vulnerability can disrupt network analysis, rendering the tool temporarily unusable. Users are advised to update to the latest version to mitigate risks associated with this issue, ensuring uninterrupted access to critical network analysis functionalities.

Affected Version(s)

Wireshark 4.6.0 < 4.6.7

References

https://www.wireshark.org/security/wnpa-sec-2026-56.html
https://gitlab.com/wireshark/wireshark/-/work_items/21390

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
.