Unrated severityNVD Advisory· Published Aug 5, 2026· Updated Aug 5, 2026

CVE-2026-67870

Description

In 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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Open62541/Open62541llm-fuzzy
Range: <=1.5.5

Patches

Vulnerability mechanics

References

github.com/open62541/open62541/blob/v1.5.5/include/open62541/types.hmitre
github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_nodemanagement.cmitre
github.com/open62541/open62541/blob/v1.5.5/src/ua_types.cmitre
github.com/open62541/open62541/issues/8172mitre

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