CVE-2026-76879 — HIGH (7.5)

Vulnerability Description

C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-121

References

https://gitlab.com/wireshark/wireshark/-/work_items/21480
https://www.wireshark.org/security/wnpa-sec-2026-89.html

FAQ

What is CVE-2026-76879?

CVE-2026-76879 is a vulnerability with a CVSS score of 7.5 (HIGH). C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

How severe is CVE-2026-76879?

CVE-2026-76879 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-76879?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.