C12.22 Protocol Dissector Crash in Wireshark 4.6.0-4.6.7 & 4.4.0-4.4.18
CVE-2026-76879 Published on August 19, 2026
Stack-based Buffer Overflow in Wireshark
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
Vulnerability Analysis
CVE-2026-76879 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-76879 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-76879
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Affected Versions
Wireshark Foundation Wireshark:- Version 4.6.0 and below 4.6.8 is affected.
- Version 4.4.0 and below 4.4.18 is affected.