Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Oisf | Suricata | < 7.0.14 |
Related Weaknesses (CWE)
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-84q9PatchVendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8181Issue TrackingPermissions Required
FAQ
What is CVE-2026-22259?
CVE-2026-22259 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2026-22259?
CVE-2026-22259 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22259?
Check the references section above for vendor advisories and patch information. Affected products include: Oisf Suricata.