Is CVE-2026-67857 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-67857?

CVE-2026-67857 has a CVSS v3 severity of HIGH (7.5).

Back

Description

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