by Kastro
Paper/Archive/CVE-2025-3755

CVE-2025-3755

Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U-32MT/ES — Information Disclosure and Denial-of-Service(DoS) Vulnerability in MELSEC iQ-F Series CPU module

EPSS 0.9%CVSS 9.1
critical.is priorityof 100
39
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 58.6.586 × 2011.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules allows a remote unauthenticated attacker to read information in the product, to cause a Denial-of-Service (DoS) condition in MELSOFT connection, or to stop the operation of the CPU module (causing a DoS condtion on the CPU module), by sending specially crafted packets. The product is needed to reset for recovery.

Affected

ProductAffectedFixed inSource
MELSEC iQ-F Series FX5U-32MT/ESAll versions–CNA
MELSEC iQ-F Series FX5U-32MT/DSAll versions–CNA
MELSEC iQ-F Series FX5U-32MT/ESSAll versions–CNA
MELSEC iQ-F Series FX5U-32MT/DSSAll versions–CNA
MELSEC iQ-F Series FX5U-32MR/ESAll versions–CNA
MELSEC iQ-F Series FX5U-32MR/DSAll versions–CNA
MELSEC iQ-F Series FX5U-64MT/ESAll versions–CNA
MELSEC iQ-F Series FX5U-64MT/DSAll versions–CNA
MELSEC iQ-F Series FX5U-64MT/ESSAll versions–CNA
MELSEC iQ-F Series FX5U-64MT/DSSAll versions–CNA
MELSEC iQ-F Series FX5U-64MR/ESAll versions–CNA
MELSEC iQ-F Series FX5U-64MR/DSAll versions–CNA

Scores by source

Mitsubishi (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorymitsubishielectric.com/psirt/vulnerability/pdf/2025-003_en.pdfrefjvn.jp/vu/JVNVU94070048refcisa.gov/news-events/ics-advisories/icsa-25-153-03