CVE-2026-22264
January 27, 2026
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.
Affected Packages
https://github.com/OISF/suricata.git (GITHUB):
Affected version(s) >=suricata-0.8.2 <suricata-7.0.14Fix Suggestion:
Update to version suricata-7.0.14https://github.com/OISF/suricata.git (GITHUB):
Affected version(s) >=suricata-8.0.0 <suricata-8.0.3Fix Suggestion:
Update to version suricata-8.0.3suricata (RUST):
Affected version(s) >=6.0.3-alpha.1 <7.0.14Fix Suggestion:
Update to version 7.0.14suricata (RUST):
Affected version(s) >=8.0.0 <8.0.3Fix Suggestion:
Update to version 8.0.3Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Use After Free
EPSS
Base Score:
0.04
