CVE-2026-45761 Suricata detect: case-insensitive frame handling can cause heap buffer overflow during rule load

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached...

CVE-2026-45761

Suricata versions prior to 7.0.16 and 8.0.5 are affected by a heap buffer overflow in the rule parsing/loading path. A crafted detection rule using mixed-case frame syntax triggers the overflow while Suricata loads signatures — not via network traffic alone. The CVSS 3.1 score is 3.3 (LOW) , with...

CVE-2026-4748 pf silently ignores certain rules

A regression in the way hashes were calculated caused rules containing the address range syntax x.x.x.x - y.y.y.y that only differ in the address ranges involved to be silently dropped as duplicates. Only the first of such rules is actually loaded into pf. Ranges expressed using the...