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Back to active CVEs
Low · CVSS 3.3CVE-2026-63451

Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule loadCVE-2026-63451

Answer in brief

CVE-2026-63451 records a Low severity (CVSS 3.3) vulnerability in Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule load. The current sources do not mark it as known exploited. The current feed maps OISF/suricata (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 18, 2026Updated Sep 28, 2026Source checked Nov 3, 2026First seen by HOL Sep 18, 2026Material review Sep 28, 2026
Upstream Advisory

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-122
Source
CVE List V5
Source checked
Nov 3, 2026
References
6 linked sources
Open source record

Key facts

Risk
Low · CVSS 3.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 3.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps OISF/suricata (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OISF/suricatageneric>=8.0.0 <8.0.68.0.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OISF/suricata.
  2. 2Review the reported fix. Update OISF/suricata to 8.0.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 18, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referenceredmine.openinfosecfoundation.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.