CVE-2021-20594

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU firmware versions "26" and prior and Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to acquire legitimate user names registered in the module via brute-force attack on user names.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
MitsubishiCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 79%
VendorProductVersion
mitsubishielectricr08sfcpu_firmware
*
mitsubishielectricr16sfcpu_firmware
*
mitsubishielectricr32sfcpu_firmware
*
mitsubishielectricr120sfcpu_firmware
*
mitsubishielectricr08psfcpu_firmware
*
mitsubishielectricr16psfcpu_firmware
*
mitsubishielectricr32psfcpu_firmware
*
mitsubishielectricr120psfcpu_firmware
*
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://jvn.jp/vu/JVNVU98578731/index.html
https://www.cisa.gov/uscert/ics/advisories/icsa-21-250-01
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-008_en.pdf
https://jvn.jp/vu/JVNVU98578731/index.html
https://www.cisa.gov/uscert/ics/advisories/icsa-21-250-01
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-008_en.pdf