CVE-2026-1301

CVE-2026-1301 pertains to o6 Automation GmbH Open62541 (Open62541/Open62541-like builds) where in PubSub with JSON decoding enabled a crafted JSON message can cause a heap-allocated array write beyond bounds before authentication, leading to a process crash and memory corruption. Affected compone...

CVE-2026-1301 Out-of-bounds Write in o6 Automation GmbH Open62541

In builds with PubSub and JSON enabled, a crafted JSON message can cause the decoder to write beyond a heap-allocated array before authentication, reliably crashing the process and corrupting memory...