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

CVE ID : CVE-2026-1301

Published : Feb. 5, 2026, 7:09 p.m. | 9 minutes ago

Description : 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.

Severity: 6.8 | MEDIUM

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