What’s Vulnerable › Vulnerabilities

CVE-2026-31937: Suricata dcerpc: quadratic complexity in dcerpc buffering

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-02 · updated 2026-10-26
• Weakness: CWE-407

Description

Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has been patched in version 7.0.15.

Affected products

• OISF suricata: before 7.0.15 — fixed in 7.0.15

How to fix

Upgrade to a fixed version: OISF suricata 7.0.15. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/security/advisories/GHSA-86vg-w8vm-m3gg
• https://redmine.openinfosecfoundation.org/issues/8304

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