CVE-2026-67863
18Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5
exploitation probability
—
observed exploitation
nono source reports it
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:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
Affected products
n/a · n/aReferences
https://github.com/open62541/open62541/blob/v1.5.5/include/open62541/server.hhttps://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_monitoreditem.chttps://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_subscription.chttps://github.com/open62541/open62541/issues/8131