Description
Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-011_en.pdf
Third Party Advisory government-resource
https://jvn.jp/vu/JVNVU98578731
Third Party Advisory, US Government Resource government-resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-287-03
Scores
CVSS v3
9.1
EPSS
0.0033
EPSS Percentile
56.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-319
CWE-639
Status
published
Products (8)
mitsubishielectric/r08psfcpu_firmware
mitsubishielectric/r08sfcpu_firmware
mitsubishielectric/r120psfcpu_firmware
mitsubishielectric/r120sfcpu_firmware
mitsubishielectric/r16psfcpu_firmware
mitsubishielectric/r16sfcpu_firmware
mitsubishielectric/r32psfcpu_firmware
mitsubishielectric/r32sfcpu_firmware
Published
Oct 14, 2021
Tracked Since
Feb 18, 2026