CVE-2026-22259
Suricata is a network IDS, IPS and NSM engine.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.52% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- oisf/suricata
- Source
- security-advisories@github.com
References
- https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7ePatch
- https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942Patch
- https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9Patch, Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8181Issue Tracking, Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.