CVE-2018-6836: Wireshark

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

Affected products

• Wireshark Wireshark: up to and including 2.4.4

Published 2018-02-08. Last modified 2026-06-17.