High severity7.5NVD Advisory· Published Aug 4, 2026· Updated Aug 31, 2026
CVE-2026-67856
CVE-2026-67856
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/open62541/open62541/blob/master/examples/access_control/server_access_control.cnvd
- github.com/open62541/open62541/blob/master/src/server/ua_services_subscription.cnvd
- github.com/open62541/open62541/blob/master/src/server/ua_subscription.cnvd
- github.com/open62541/open62541/blob/master/src/server/ua_subscription.hnvd
- github.com/open62541/open62541/issues/8092nvd
News mentions
1- Open62541: 14 Critical and High-Severity Vulnerabilities Disclosed TogetherVypr Intelligence · Aug 6, 2026