Vulnerable software

FX5U(C) CPU and FX5UJ CPU modules

Severity level

Severity level: High
Impact: Possibility of authorization in the file password mechanism using the password hash value 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-2022-25157

Vulnerability description:

The vulnerability of the FX5U(C) CPU and FX5UJ CPU modules of Mitsubishi Electric FA products is associated with the possibility of using a password hash instead of a password for authentication. Exploiting the vulnerability may allow an attacker who knows the hash value of the password to perform authorization in the file password mechanism using password hash.

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 (Positive Technologies)