CVE-2026-31937 PUBLISHED

Suricata dcerpc: quadratic complexity in dcerpc buffering

Assigner: GitHub_M
Reserved: 10.03.2026 Published: 02.04.2026 Updated: 02.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	OISF
Product	suricata
Versions	Version < 7.0.15 is affected

References

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

Problem Types

CWE-407: Inefficient Algorithmic Complexity CWE