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[ CVE-2026-96423 · Published 29 Sep 2026 ]

Vulnerability in Wireshark Foundation Wireshark

CVSS 7.1 EPSS <1%2 agency advisoriesNo fix listed yet

[ Description ]Official description

X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

  • CERT-FRCERTFR-2026-AVI-1221

    Multiple vulnerabilities in Wireshark Translated from French

    Multiple vulnerabilities have been discovered in Wireshark. They allow an attacker to cause remote arbitrary code execution and remote denial of service.

    CVE-2026-96423CVE-2026-95390CVE-2026-96420+16 more CVEs
  • BSI CERT-BundWID-SEC-2026-3547

    Wireshark: Multiple vulnerabilities Translated from German

    CVE-2026-95391CVE-2026-95386CVE-2026-96423+16 more CVEs

[ References ]References