CVE-2020-5594
CRITICAL
9.8
CVSS Score
Published: June 23, 2020 at 07:35 AM UTC
Updated: June 17, 2026 at 03:21 AM UTC
11 products affected across 1 vendorMELSEC Q FirmwareMELSEC Fx FirmwareMELSEC Iq F Firmware
Using MELSEC iQ-R, iQ-F, Q, L, and FX series CPU modules by Mitsubishi Electric Corporation?
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
mitsubishielectric-melsec-iq-f (same device)
All versions
mitsubishielectric-melsec-iq-r (same device)
All versions
All versions
All versions
All versions
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/vu/JVNVU91424496/index.htmlx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-003.pdfx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-003_en.pdfCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-319
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