Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-63451

CVE-2026-63451MEDIUM

OISF suricata — Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule load

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0015    3.5     —

AFFECTED
  Product   Versions             Fixed
  suricata  >= 8.0.0, < 8.0.6 –  —

TIMELINE
  Jul 16  Reserved by GitHub_M
  Sep 18  Published (CNA: GitHub_M)
  Sep 28  RESCORED — CVE-2026-63451 (OISF suricata). CVSS 3.3 → 5.5 (NVD).

CWE-122 · CNA: GitHub_M · CVSS v3.1 · 6 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 16, 2026	Reserved	Reserved by GitHub_M
September 18, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	RESCORED	RESCORED — CVE-2026-63451 (OISF suricata). CVSS 3.3 → 5.5 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OISF	suricata	—	>= 8.0.0, < 8.0.6	—

Weaknesses

CWE-122

References (6)

https://github.com/OISF/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f [Patch]
https://github.com/OISF/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975 [Patch]
https://github.com/OISF/suricata/pull/15807 [Patch]
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 [Release Notes]
https://github.com/OISF/suricata/security/advisories/GHSA-6qwq-j83r-qp34 [Mitigation, Vendor Advisory]
https://redmine.openinfosecfoundation.org/issues/8590 [Permissions Required]

Authoritative record: CVE-2026-63451 at cve.org

Vendors: oisf

Weaknesses: CWE-122

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63451 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.