CVE-2026-22264

CRITICAL EPSS 26.3%
Published Jan 27, 20265mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Jan 27, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
26.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 2

VendorProductVersionRange
oisfsuricata* <7.0.14
oisfsuricata*≥8.0.0  –  <8.0.3

References 5

  • github.com https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715
    Patch
  • github.com https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2
    Patch
  • github.com https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b
    Patch
  • github.com https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5
    Vendor Advisory
  • redmine.openinfosecfoundation.org https://redmine.openinfosecfoundation.org/issues/8190
    Permissions Required

Remediation

  • github.com https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715
    Patch
  • github.com https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2
    Patch
  • github.com https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b
    Patch