Vulnerability Description
An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItems(Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions requests
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/open62541/open62541/blob/master/examples/access_control/serve
- https://github.com/open62541/open62541/blob/master/src/server/ua_services_subscr
- https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.c
- https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.h
- https://github.com/open62541/open62541/issues/8092
- https://github.com/open62541/open62541/issues/8092
FAQ
What is CVE-2026-67856?
CVE-2026-67856 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItems(Sampling), Publish, TransferSubscriptions, and Delet...
How severe is CVE-2026-67856?
CVE-2026-67856 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-2026-67856?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.