CVE-2026-18784 o6 open62541 ua_client_highlevel.c UA_Client_readNodeClassAttribute heap-based overflow

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UAClientreadNodeClassAttribute of the file src/client/uaclienthighlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public a...

CVE-2026-18784

The CVE affects o6 open62541 up to 1.5.5, specifically the UA_Client_readNodeClassAttribute routine in src/client/ua_client_highlevel.c. A heap-based buffer overflow is triggered by manipulation, requiring local access to exploit. The exploit has been made public. Details about affected versions ...