CVE-2026-22264

CriticalCVSS 9.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
OISF	suricata	< 7.0.14; >= 8.0.0, < 8.0.3

References

Timeline

Published: Jan 27, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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