Vulnerability Description
In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UA_Subscription_localPublish continues to use the current UA_Notification after a callback invokes UA_Server_deleteMonitoredItem for the current local MonitoredItem. This allows a remote attacker to cause a denial of service.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/open62541/open62541/blob/v1.5.5/include/open62541/server.h
- https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_monito
- https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_subscription.c
- https://github.com/open62541/open62541/issues/8131
- https://github.com/open62541/open62541/issues/8131
FAQ
What is CVE-2026-67863?
CVE-2026-67863 is a vulnerability with a CVSS score of 7.5 (HIGH). In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UA_Subscription_localPublish continues to use the current UA_Notification after ...
How severe is CVE-2026-67863?
CVE-2026-67863 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-67863?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.