CVE-2026-67863
CVE-2026-67863
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.5 · High · EPSS 0.7%
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
open62541 Debian:13
- Versions
- 1.4.11.1-1
- 1.4.18-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
open62541 Debian:14
- Versions
- 1.4.11.1-1
- 1.4.18-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
open62541 Ubuntu:26.10
- Versions
- 1.4.11.1-1build1
- 1.4.18-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
open62541 Ubuntu:26.04:LTS
- Versions
- 1.4.11.1-1
- 1.4.11.1-1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/open62541/open62541/issues/8131
- 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_subscription.c
- https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_monitoreditem.c
- https://nvd.nist.gov/vuln/detail/CVE-2026-67863