CVE-2026-63451
Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule load
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplied detection rule that combines frame inspection without content and a transformed match without content can make src/detect-engine-prefilter.c select multiple non-prefilter frame engines while preparing signatures for non-prefilter inspection. Loading the crafted rule, including in test mode, can trigger a heap buffer overflow and crash Suricata; network traffic alone cannot reach the flaw. This issue is fixed in version 8.0.6.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 96% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.3.
Weakness
Affected products
References (6)
- https://github.com/OISF/suricata/security/advisories/GHSA-6qwq-j83r-qp34 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/OISF/suricata/pull/15807 (opens in a new tab)x_refsource_MISC
- https://github.com/OISF/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f (opens in a new tab)x_refsource_MISC
- https://github.com/OISF/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975 (opens in a new tab)x_refsource_MISC
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 (opens in a new tab)x_refsource_MISC
- https://redmine.openinfosecfoundation.org/issues/8590 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-63451)Record last updated .