Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-04-30T05:38:34 Wireshark: Wireshark: Denial of Service via BEEP protocol dissector crash 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CWE-1286

A flaw was found in Wireshark. A remote attacker could exploit a crash in the BEEP (Blocks Extensible Exchange Protocol) dissector by crafting a malicious BEEP packet. This vulnerability leads to a Denial of Service (DoS), causing Wireshark to become unresponsive.

To mitigate this issue, disable the BEEP protocol dissector in Wireshark. This prevents the application from processing BEEP packets, thereby avoiding the vulnerability. This action can be performed within Wireshark's protocol preferences. Disabling the BEEP dissector will prevent analysis of BEEP protocol traffic. Red Hat Enterprise Linux 10 Fix deferred wireshark Red Hat Enterprise Linux 6 Fix deferred wireshark Red Hat Enterprise Linux 7 Fix deferred wireshark Red Hat Enterprise Linux 8 Fix deferred wireshark Red Hat Enterprise Linux 9 Fix deferred wireshark https://www.cve.org/CVERecord?id=CVE-2026-6538 https://nvd.nist.gov/vuln/detail/CVE-2026-6538 https://gitlab.com/wireshark/wireshark/-/issues/21120 https://www.wireshark.org/security/wnpa-sec-2026-23.html