CVE-2026-76886: Wireshark

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

Affected products

• Wireshark Wireshark: from 4.4.0, before 4.4.18 (fixed in 4.4.18); from 4.6.0, before 4.6.8 (fixed in 4.6.8)

Published 2026-08-19. Last modified 2026-08-28.