CVE-2026-22264
High
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.
SeverityHigh
CVSS7.4
Exploit probability—
ProductOisf Suricata
PublishedJan 27, 2026
First seenJan 27, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- oisf suricata7.0.14, 8.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| oisf suricata | v < 7.0.14, 8.0.0 ≤ v < 8.0.3 | 7.0.14, 8.0.3 |
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