CVE-2026-6244: The Tcpdump Group Libpcap

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero.

Affected products

• The Tcpdump Group Libpcap: before 1.10.7 (fixed in 1.10.7)

Published 2026-09-05. Last modified 2026-09-08.