CVE-2026-22259

High

Description

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).

SeverityHigh

CVSS7.5

Exploit probability—

ProductOisf Suricata

PublishedJan 27, 2026

First seenJan 27, 2026

Weakness typeCWE-400Uncontrolled resource consumption CWE-770Allocation of resources without limits

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

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.