CVE-2021-20594

CVSS V2 Medium 5 CVSS V3 High 7.5
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 all versions allows a remote unauthenticated attacker to acquire legitimate user names registered in the module via brute-force attack on user names.
Overview
  • CVE ID
  • CVE-2021-20594
  • Assigner
  • Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-08-06T17:15:07
  • Last Modified Date
  • 2022-10-14T18:15:12
Weakness Enumerations
CWE URL
CWE-200 http://cwe.mitre.org/data/definitions/200.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:mitsubishielectric:r08sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r08sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r16sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r16sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r32sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r32sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r120sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r120sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r08psfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r08psfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r16psfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r16psfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r32psfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r32psfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishielectric:r120psfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r120psfcpu:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://jvn.jp/vu/JVNVU98578731/index.html Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-250-01
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-008_en.pdf Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20594
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20594
History
Created Old Value New Value Data Type Notes
2022-05-10 06:55:50 Added to TrackCVE
2022-12-05 07:35:43 2021-08-06T17:15Z 2021-08-06T17:15:07 CVE Published Date updated
2022-12-05 07:35:43 2022-10-14T18:15:12 CVE Modified Date updated
2022-12-05 07:35:43 Modified Vulnerability Status updated
2022-12-05 07:35:47 References updated