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Vulnerabilities

CVE-2026-110022 | BDVDB-2026-400233 Detail

Phoenix ContactPLCnext Engineer

Description#

The PFI plugin framework deploys executable assemblies (DLLs) from a signed plugin package into the local plugin repository and loads them via reflection, but the deployment routine processes archive entries that were never covered by the signature verification. An unauthenticated local attacker can replace an unsigned DLL outside the signed prefix in the archive passes verification and overwrites the legitimate signed assembly at the same destination path. The plugin loader then instantiates the attacker-supplied code without any additional integrity check resulting in a full compromise of the affected systems.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

  • CWE-494 Download of Code Without Integrity Check

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.