Description
A vulnerability was determined in o6 open62541 ca356b088ada7dee824d1b4acd07c1ff07ce242b. Impacted is the function UA_Client_getRemoteDataTypes of the file examples/custom_datatype/client_types_custom.c. Executing a manipulation can lead to use after free. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. 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 |
|---|---|---|---|
| o6 | open62541 | ca356b088ada7dee824d1b4acd07c1ff07ce242b | — |
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-385787 | o6 open62541 client_types_custom.c UA_Client_getRemoteDataTypes use after free vdb-entry technical-description
- VDB-385787 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-18785 | CVE Analysis and Report third-party-advisory
- Submit #857052 | open62541 Project open62541 master (commit ca356b088ada7dee824d1b4acd07c1ff07ce242b) Uncontrolled Recursion (Stack Overflow) third-party-advisory
- https://github.com/open62541/open62541/issues/8131 issue-tracking
- https://github.com/gff-cw/information/issues/12 exploit issue-tracking