CVE-2026-45761Suricata detect: case-insensitive frame handling can cause heap buffer overflow during rule load
Updated under an hour ago ()
Does this affect you?
It affects OISF suricata. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Sep 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OISF suricata oisf:suricata (from the name) | from 8.0.0, < 8.0.5; before 7.0.16 | CNA record |
oisf suricata oisf:suricata | from 7.0.0 before 7.0.16; from 8.0.0 before 8.0.5 | NVD |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vmx-refsource-confirm, vendor-advisory
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315x-refsource-misc, release-notes, vendor-advisory
- https://redmine.openinfosecfoundation.org/issues/8526x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.