Vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds

CVE-2025-7731

Cleartext Transmission of Sensitive Information vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker to obtain credential information by intercepting SLMP communication messages, and read or write the device values of the product and stop the operations of programs by using the obtained credential information.

EPSS: 0.003 (23.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-7731?
CVE-2025-7731 is a high-severity vulnerability in Mitsubishi Electric Corporation Melsec Iq-F Series Fx5s-30mr/ds, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2025-09-01.
How severe is CVE-2025-7731?
High severity. CVSS v3 base score is 7.5 out of 10.