CVE-2026-22264 — Use After Free in Suricata

CWE-416 — Use After Free5 documents5 sources
Severity
9.1CRITICALNVD
CNA7.4
EPSS
0.1%
top 74.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Oisf Suricata
Timeline
PublishedJan 27

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HExploitability: 3.9 | Impact: 5.2

Affected Packages3 packages

▶CVEListV5oisf/suricata< 7.0.14+1
▶NVDoisf/suricata8.0.0 — 8.0.3+1
▶Debianoisf/suricata< 1:7.0.10-1+deb13u3+1

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
OSV
CVE-2026-22264: Suricata is a network IDS, IPS and NSM engine↗2026-01-27
▶
CVEList
Suricata detect/alert: heap-use-after-free on alert queue expansion↗2026-01-27
▶

📋Vendor Advisories

1
Debian
CVE-2026-22264: suricata - Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-22264 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-22264 — Use After Free in Oisf Suricata | cvebase