CVE-2026-76881

Wireshark's CMS protocol dissector crashes via a null pointer dereference in versions 4.6.0–4.6.7 and 4.4.0–4.4.18, enabling denial of service. CVSS 4.7 (MEDIUM) requires local access and user interaction. Fix: upgrade to 4.6.8 or 4.4.19 per wnpa-sec-2026-76. No exploitation details provided.