CVE-2026-67857 PUBLISHED

open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.

• https://github.com/open62541/open62541/issues/8104
• https://github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_connect.c
• https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect.c
• https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect_loop.c
• https://github.com/gff-cw/information/issues/9

• n/a text