CVE catalog
CVE-2026-67863
DEBIAN-CVE-2026-67863
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.74% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | open62541 | 13 | 1.4.11.1-1 | vulnerable |
| Debian | open62541 | 13 | 1.4.18-1 | vulnerable |
| Debian | open62541 | 14 | 1.4.11.1-1 | vulnerable |
| Debian | open62541 | 14 | 1.4.18-1 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [libopen62541-1.4]Affected
Source package: [open62541]
Details (2)
1.4.11.1-1· amd64 · trixieAffected
pypi · open62541 · debian · 13
1.4.11.1-1· arm64 · trixieAffected
pypi · open62541 · debian · 13
- [libopen62541-1.4-dev]Affected
Source package: [open62541]
Details (2)
1.4.11.1-1· amd64 · trixieAffected
pypi · open62541 · debian · 13
1.4.11.1-1· arm64 · trixieAffected
pypi · open62541 · debian · 13
- [libopen62541-1.4-tools]Affected
Source package: [open62541]
Details (2)
1.4.11.1-1· all · trixieAffected
pypi · open62541 · debian · 13
1.4.11.1-1· all · trixieAffected
pypi · open62541 · debian · 13
Observed: