CVE-2026-22264: 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…

PriorityP351critical9.1CVSS 3.1

AVNACLPRNUINSUCNIHAH

EPSS

0.34%

26.2th percentile

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

6 ranges

Vendor	Product	Version range	Fixed in
debian	suricata	< suricata 1:8.0.3-1 (forky)	suricata 1:8.0.3-1 (forky)
oisf	suricata	< 7.0.14	7.0.14
oisf	suricata	—	—
oisf	suricata	>= 0 < 1:7.0.10-1+deb13u3	1:7.0.10-1+deb13u3
oisf	suricata	>= 0 < 1:8.0.3-1	1:8.0.3-1
oisf	suricata	>= 8.0.0 < 8.0.3	8.0.3

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

osv9.1CRITICAL

vendor_debian7.4HIGH

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.