VULNERABILITY INTELLIGENCE
CVE-2026-67870
CVSS score9.8 CRITICAL
EPSS probability1.06%
CISA KEVNot currently listed
Published2026-08-06
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476