PLCnext Engineer checks GSDX manifest reference digests but does not cryptographically verify the XML SignatureValue over canonicalized SignedInfo. An unauthenticated local attacker can modify signed GSDML content, update its manifest digest, retain the public certificate data, and leave an invalid nonempty SignatureValue. PLCnext Engineer prior to 2026.6 reports the package as Valid and selects the modified device description for import under the default policy.

A download of code without integrity check vulnerability in PLCnext products allows an remote attacker with low privileges to compromise integrity on the affected engineering station and the connected devices.

A incorrect permission assignment for critical resource vulnerability in PLCnext products allows an remote attacker with low privileges to gain full access on the affected devices.

A heap buffer overflow vulnerability in Wibu CodeMeter Runtime network service up to version 7.60b allows an unauthenticated, remote attacker to achieve RCE and gain full access of the host system.