Description
Improper Handling of Length Parameter Inconsistency vulnerability in web server function on Mitsubishi Electric Corporation MELSEC iQ-F Series CPU module allows a remote unauthenticated attacker to delay the processing of the web server function and prevent legitimate users from utilizing the web server function, by sending a specially crafted HTTP request.
References (3)
Core 3
Core References
Various Sources vendor-advisory
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-010_en.pdf
Third Party Advisory government-resource
https://jvn.jp/vu/JVNVU90316328/
Third Party Advisory, US Government Resource government-resource
https://www.cisa.gov/news-events/ics-advisories/icsa-25-233-01
Scores
CVSS v3
5.3
EPSS
0.0055
EPSS Percentile
41.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-130
Status
published
Products (50)
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MR/DS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MR/ES
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MT/DS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MT/DSS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MT/ES
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-30MT/ESS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-40MR/DS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-40MR/ES
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-40MT/DS
All versions
Mitsubishi Electric Corporation/MELSEC iQ-F Series FX5S-40MT/DSS
All versions
... and 40 more
Published
Aug 25, 2025
Tracked Since
Feb 18, 2026