Denial of Service Vulnerability in Wireshark by The Wireshark Foundation
CVE-2026-76927

4.7MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76927?

A vulnerability has been identified in Wireshark that causes a crash in the H.245 protocol dissector, which can lead to a denial of service situation. This issue affects versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 of the software, allowing attackers to exploit the flaw to interrupt services. Users are advised to upgrade to the latest version to mitigate this security risk.

Affected Version(s)

Wireshark 4.6.0 < 4.6.8

Wireshark 4.4.0 < 4.4.18

References

https://www.wireshark.org/security/wnpa-sec-2026-77.html
https://gitlab.com/wireshark/wireshark/-/work_items/21447

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern)
.