Summary
Siemens patched a maximum-severity authentication bypass vulnerability CVE-2026-56451 in its Opcenter X manufacturing platform that allowed unauthenticated attackers to forge tokens and gain administrative control.
Take Action:
If you run Siemens Opcenter X, first make sure it is isolated from the internet and reachable only from trusted networks, using a VPN if remote access is truly needed. Then update to version V2604 or later as soon as possible, since this flaw lets anyone forge a login token and take over your factory floor system as an administrator.
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This article was originally published on BeyondMachines
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