CVE-2021-20600

Published on: 10/08/2021 12:00:00 AM UTC

Last Modified on: 11/28/2021 11:12:00 PM UTC

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Certain versions of R12ccpu-v from Mitsubishielectric contain the following vulnerability:

Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.

  • CVE-2021-20600 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 5.9 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK HIGH NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 4.3 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
Mitsubishi Electric MELSEC iQ-R Series C Controller Module | CISA us-cert.cisa.gov
text/html
URL Logo MISC us-cert.cisa.gov/ics/advisories/icsa-21-280-04
JVNVU#94914666: 三菱電機製MELSEC iQ-RシリーズC言語コントローラユニットにおけるリソース枯渇の脆弱性 jvn.jp
text/xml
URL Logo MISC jvn.jp/vu/JVNVU94914666/index.html
www.mitsubishielectric.com
application/pdf
URL Logo MISC www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
HardwareMitsubishielectricR12ccpu-v-AllAllAll
Operating
System
MitsubishielectricR12ccpu-v FirmwareAllAllAllAll
  • cpe:2.3:h:mitsubishielectric:r12ccpu-v:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:mitsubishielectric:r12ccpu-v_firmware:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-20600 : Uncontrolled resource consumption in MELSEC iQ-R series C Controller Module R12CCPU-V all versions… twitter.com/i/web/status/1… 2021-10-08 17:02:12
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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