Vulnerable software

FX5U(C) CPU and FX5UJ CPU modules

Severity level

Severity level: High
Impact: Possibility to access file 00000001.SYP with file password mechanism enabled in the FX5U(C) CPU and FX5UJ CPU modules
Access Vector: Remote

CVSS v3.0
Base Score: 7,4
Vector: (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVE-2022-25158

Vulnerability description:

The vulnerability of the FX5U(C) CPU and FX5UJ CPU modules of Mitsubishi Electric FA products is associated with the storage of sensitive information in open form. Exploiting the vulnerability may allow an attacker, provided that the file password mechanism is enabled, to gain access to file 00000001.SYP firmware PLC.

Advisory status

15.12.2021 - Vendor gets vulnerability details
31.03.2022 - Security advisory publication date (https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdf )

Credits

The vulnerability was detected by Anton Dorfman and Iliya Rogachev (Positive Technologies)