CVE-2020-5594

moderate-risk
Published 2020-06-23

Mitsubishi Electric MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules all versions contain a vulnerability that allows cleartext transmission of sensitive information between CPU modules and GX Works3 and/or GX Works2 via unspecified vectors.

Do I need to act?

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0.33% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (5)

Melsec Iq-R Firmware
Melsec Iq-F Firmware
Melsec-Q Firmware
Melsec-L Firmware
Melsec-Fx Firmware

Affected Vendors

Mitsubishielectric

References (6)

Third Party Advisory https://jvn.jp/en/vu/JVNVU91424496/index.html
Vendor Advisory https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-003.pdf
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-003_en.pdf
Third Party Advisory https://jvn.jp/en/vu/JVNVU91424496/index.html
Vendor Advisory https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-003.pdf
Vendor Advisory https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-003_en.pdf
45
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 12/34 · Low