Suricata dnp3: unbounded transaction growth_CVE-2026-22259

7.5 / 10

HIGH

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

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).

Basic Information

ID CVE-2026-22259

Source GitHub_M

Published Jan 27, 2026 at 17:13

Affected Product

Vendor OISF

Product suricata

Version < 7.0.14

Affected Versions OISF suricata < 7.0.14
OISF suricata >= 8.0.0, < 8.0.3

CWE Classification

CWE-400 CWE-770

References

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    "published": "2026-01-27T17:13:11.057Z",
    "modified": "2026-01-27T17:13:11.057Z",
    "type": "cve",
    "title": "Suricata dnp3: unbounded transaction growth",
    "source": "GitHub_M",
    "references": "https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9\nhttps://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e\nhttps://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942\nhttps://redmine.openinfosecfoundation.org/issues/8181",
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