CVE-2025-29917: Oisf Suricata

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this, signatures using the keyword and setting can cause large memory allocations of up to 4 GiB per thread. This vulnerability is fixed in 7.0.9.

Affected products

• Oisf Suricata: before 7.0.9 (fixed in 7.0.9)

Published 2025-04-10. Last modified 2026-06-17.