Denial of Service Vulnerability in Wireshark Kerberos Protocol Dissector
CVE-2026-76924

5.5MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76924?

The Wireshark application versions from 4.4.0 to 4.4.18 and 4.6.0 to 4.6.7 contain a vulnerability in the Kerberos protocol dissector that can lead to denial of service. An attacker can exploit this issue to crash the application, disrupting network analysis capabilities. Users are encouraged to update to the latest version of Wireshark to mitigate this risk. For further information, refer to the detailed security announcement.

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-2026-78.html
https://gitlab.com/wireshark/wireshark/-/work_items/21449

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

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