Bug 2511847 (CVE-2026-67863) - CVE-2026-67863 open62541: open62541: Denial of Service via use-after-free vulnerability
Summary: CVE-2026-67863 open62541: open62541: Denial of Service via use-after-free vul...
Keywords:
Status: NEW
Alias: CVE-2026-67863
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2511919
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 22:41 UTC by OSIDB Bzimport
Modified: 2026-08-06 06:12 UTC (History)
0 users

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Description OSIDB Bzimport 2026-08-05 22:41:22 UTC 
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.
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