CVE-2026-76887

A flaw was found in Wireshark. This heap-based buffer overflow vulnerability in the dissection engine could allow a remote attacker to cause a denial of service. Exploitation requires a user to process a specially crafted network packet, leading to a crash of the application.

A flaw was found in the dissection engine in Wireshark versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship an affected version of Wireshark.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Do not open untrusted packet capture files or capture traffic from untrusted networks with Wireshark.