CVE-2026-22259

HIGH

Suricata < 7.0.14 - Denial of Service via DNP3 Traffic Parsing

Title source: llm
STIX 2.1

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).

References (4)

Core 4

Scores

CVSS v3 7.5
EPSS 0.0051
EPSS Percentile 39.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770 CWE-400
Status published
Products (1)
oisf/suricata < 7.0.14
Published Jan 27, 2026
Tracked Since Feb 18, 2026