CVE-2011-1956: Wireshark

Medium severity, CVSS 4.3. EPSS: 5.9% chance of exploitation in the next 30 days.

The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.

Affected products

• Wireshark Wireshark: version 1.4.5 only

Published 2011-06-06. Last modified 2026-06-16.