Description
A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | open62541 | 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | open62541 | No fix yet | — |
| Debian 13 | open62541 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | open62541 | No fix yet | — |
| Ubuntu 26.04 LTS | open62541 | No fix yet | — |
References
- VDB-397123 | open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free vdb-entry technical-description
- VDB-397123 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-82623 | CVE Analysis and Report third-party-advisory
- Submit #893207 | open62541 Project open62541 1.5.5 Use After Free third-party-advisory
- https://github.com/open62541/open62541/issues/8199 exploit issue-tracking
- https://github.com/open62541/open62541/ product