CVE-2026-45761
3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
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 during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| OISF | suricata | >= 8.0.0, < 8.0.5 | affected |
| OISF | suricata | < 7.0.16 | affected |
Weaknesses
- CWE-122: CWE-122: Heap-based Buffer Overflow
References
- https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
- https://redmine.openinfosecfoundation.org/issues/8526
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