CVE-2026-67870

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-67870
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 00:16:54 UTC
Updated2026-08-06 22:18:23 UTC
DescriptionIn open62541 v1.5.5, the server-side AddReferences implementation contains an incomplete validation flaw for non-local ExpandedNodeId targets. A remote attacker can send a crafted AddReferencesRequest with an empty targetServerUri and a non-zero targetNodeId.serverIndex, causing the target node pointer to remain NULL while execution continues.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

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

EPSS: 0.005760000 probability, percentile 0.443190000 (date 2026-08-09)

Problem Types: CWE-476 | n/a | CWE-476 CWE-476 NULL Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_nodema... [email protected] github.com
github.com/open62541/open62541/blob/v1.5.5/src/ua_types.c [email protected] github.com
github.com/open62541/open62541/issues/8172 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/open62541/open62541/blob/v1.5.5/include/open62541/types.h [email protected] github.com
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