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HIGH · 7.5

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...

Vulnerability Description

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MitsubishielectricR08Sfcpu FirmwareAll versions
MitsubishielectricR08Sfcpu-
MitsubishielectricR16Sfcpu FirmwareAll versions
MitsubishielectricR16Sfcpu-
MitsubishielectricR32Sfcpu FirmwareAll versions
MitsubishielectricR32Sfcpu-
MitsubishielectricR120Sfcpu FirmwareAll versions
MitsubishielectricR120Sfcpu-
MitsubishielectricR08Psfcpu FirmwareAll versions
MitsubishielectricR08Psfcpu-
MitsubishielectricR16Psfcpu FirmwareAll versions
MitsubishielectricR16Psfcpu-
MitsubishielectricR32Psfcpu FirmwareAll versions
MitsubishielectricR32Psfcpu-
MitsubishielectricR120Psfcpu FirmwareAll versions
MitsubishielectricR120Psfcpu-

Related Weaknesses (CWE)

CWE-200

References

FAQ

What is CVE-2021-20594?

CVE-2021-20594 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...

How severe is CVE-2021-20594?

CVE-2021-20594 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20594?

Check the references section above for vendor advisories and patch information. Affected products include: Mitsubishielectric R08Sfcpu Firmware, Mitsubishielectric R08Sfcpu, Mitsubishielectric R16Sfcpu Firmware, Mitsubishielectric R16Sfcpu, Mitsubishielectric R32Sfcpu Firmware.