CVE-2026-67870
open62541 < 1.5.6 - Remote NULL Pointer Dereference via Crafted AddReferencesRequest
Title source: llmDescription
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.
Scores
EPSS
0.0027
EPSS Percentile
19.3%
Details
Status
published
Published
Aug 05, 2026
Tracked Since
Aug 06, 2026