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CVE-2026-22259

HIGH

7.5

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).

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/27/2026

Last Modified1/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

oisf:suricata

Weaknesses (CWE)

CWE-400CWE-770

References

https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e(security-advisories@github.com)

https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942(security-advisories@github.com)

https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9(security-advisories@github.com)

https://redmine.openinfosecfoundation.org/issues/8181(security-advisories@github.com)

IOC Correlations

No correlations recorded

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