CVE-2026-22258

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, leading to memory exhaustion and the process getting killed. While reported for DCERPC over UDP, it is believed that DCERPC over TCP and SMB are also vulnerable. DCERPC/TCP in the default configuration should not be vulnerable as the default stream depth is limited to 1MiB. Versions 8.0.3 and 7.0.14 contain a patch. Some workarounds are available. For DCERPC/UDP, disable the parser. For DCERPC/TCP, the `stream.reassembly.depth` setting will limit the amount of data that can be buffered. For DCERPC/SMB, the `stream.reassembly.depth` can be used as well, but is set to unlimited by default. Imposing a limit here may lead to loss of visibility in SMB.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/OISF/suricata/commit/39d8c302af3422a096b75474a4f295a754ec6a74	Patch
https://github.com/OISF/suricata/commit/f82a388d0283725cb76782cf64e8341cab370830	Patch
https://github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcx	Patch Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8182	Issue Tracking Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:oisf:suricata::::::::
	cpe:2.3:a:oisf:suricata::::::::

History

No history.

Information

Published : 2026-01-27 17:16

Updated : 2026-01-30 20:09

NVD link : CVE-2026-22258

Mitre link : CVE-2026-22258

CVE.ORG link : CVE-2026-22258

JSON object : View

Products Affected

oisf

suricata

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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