Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-32MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-64MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5U-80MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-32MT/D | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-32MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-64MT/D | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-64MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-96MT/D | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-96MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-32MT/DS-TS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-32MT/DSS-TS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UC-32MR/DS-TS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MT/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-24MR/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MT/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-40MR/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MT/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5UJ-60MR/ES-A | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MT/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MT/ESS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MR/ES | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-30MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-40MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-60MR/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MT/DS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MT/DSS | All versions | — |
| Mitsubishi Electric | MELSEC iQ-F Series FX5S-80MR/DS | All versions | — |
Advisories 1
- ICSA-25-240-02 Mitsubishi Electric MELSEC iQ-F Series CPU Module CISA ICS & IT advisories · Aug 28, 2025
References
- https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-012_en.pdf vendor-advisory
- https://jvn.jp/vu/JVNVU90041458/ government-resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-240-02 government-resource