Vulnerability Monitor

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CVE-2021-20586


Resource management errors vulnerability in a robot controller of MELFA FR Series(controller "CR800-*V*D" of RV-*FR***-D-* all versions, controller "CR800-*HD" of RH-*FRH***-D-* all versions, controller "CR800-*HRD" of RH-*FRHR***-D-* all versions, controller "CR800-*V*R with R16RTCPU" of RV-*FR***-R-* all versions, controller "CR800-*HR with R16RTCPU" of RH-*FRH***-R-* all versions, controller "CR800-*HRR with R16RTCPU" of RH-*FRHR***-R-* all versions, controller "CR800-*V*Q with Q172DSRCPU" of RV-*FR***-Q-* all versions, controller "CR800-*HQ with Q172DSRCPU" of RH-*FRH***-Q-* all versions, controller "CR800-*HRQ with Q172DSRCPU" of RH-*FRHR***-Q-* all versions) and a robot controller of MELFA CR Series(controller "CR800-CVD" of RV-8CRL-D-* all versions, controller "CR800-CHD" of RH-*CRH**-D-* all versions) as well as a cooperative robot ASSISTA(controller "CR800-05VD" of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 66 products from mitsubishielectric, from mitsubishielectric, from mitsubishielectric and 63 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-01-29T15:15:12.833

Last Modified

2024-11-21T05:46:49.483

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System mitsubishielectric rv2fr_firmware * Yes
Hardware mitsubishielectric rv2fr - No
Operating System mitsubishielectric rv2frl_firmware * Yes
Hardware mitsubishielectric rv2frl - No
Operating System mitsubishielectric rv4fr_firmware * Yes
Hardware mitsubishielectric rv4fr - No
Operating System mitsubishielectric rv4frl_firmware * Yes
Hardware mitsubishielectric rv4frl - No
Operating System mitsubishielectric rv7fr_firmware * Yes
Hardware mitsubishielectric rv7fr - No
Operating System mitsubishielectric rv7frl_firmware * Yes
Hardware mitsubishielectric rv7frl - No
Operating System mitsubishielectric rv7frll_firmware * Yes
Hardware mitsubishielectric rv7frll - No
Operating System mitsubishielectric rv13fr_firmware * Yes
Hardware mitsubishielectric rv13fr - No
Operating System mitsubishielectric rv13frl_firmware * Yes
Hardware mitsubishielectric rv13frl - No
Operating System mitsubishielectric rv20fr_firmware * Yes
Hardware mitsubishielectric rv20fr - No
Operating System mitsubishielectric rh1frhr_firmware * Yes
Hardware mitsubishielectric rh1frhr - No
Operating System mitsubishielectric rh3frhr_firmware * Yes
Hardware mitsubishielectric rh3frhr - No
Operating System mitsubishielectric rh3frh35_firmware * Yes
Hardware mitsubishielectric rh3frh35 - No
Operating System mitsubishielectric rh3frh45_firmware * Yes
Hardware mitsubishielectric rh3frh45 - No
Operating System mitsubishielectric rh3frh55_firmware * Yes
Hardware mitsubishielectric rh3frh55 - No
Operating System mitsubishielectric rh6frh35_firmware * Yes
Hardware mitsubishielectric rh6frh35 - No
Operating System mitsubishielectric rh6frh45_firmware * Yes
Hardware mitsubishielectric rh6frh45 - No
Operating System mitsubishielectric rh6frh55_firmware * Yes
Hardware mitsubishielectric rh6frh55 - No
Operating System mitsubishielectric rh12frh55_firmware * Yes
Hardware mitsubishielectric rh12frh55 - No
Operating System mitsubishielectric rh12rfh70_firmware * Yes
Hardware mitsubishielectric rh12rfh70 - No
Operating System mitsubishielectric rh12frh85_firmware * Yes
Hardware mitsubishielectric rh12frh85 - No
Operating System mitsubishielectric rh20frh85_firmware * Yes
Hardware mitsubishielectric rh20frh85 - No
Operating System mitsubishielectric rh20frh100_firmware * Yes
Hardware mitsubishielectric rh20frh100 - No
Operating System mitsubishielectric rv2fr\(b\)_firmware * Yes
Hardware mitsubishielectric rv2fr\(b\) - No
Operating System mitsubishielectric rv2frl\(b\)_firmware * Yes
Hardware mitsubishielectric rv2frl\(b\) - No
Operating System mitsubishielectric rv4frm\/c_firmware * Yes
Hardware mitsubishielectric rv4frm\/c - No
Operating System mitsubishielectric rv4frlm\/c_firmware * Yes
Hardware mitsubishielectric rv4frlm\/c - No
Operating System mitsubishielectric rv7frm\/c_firmware * Yes
Hardware mitsubishielectric rv7frm\/c - No
Operating System mitsubishielectric rv7frlm\/c_firmware * Yes
Hardware mitsubishielectric rv7frlm\/c - No
Operating System mitsubishielectric rv7frllm\/c_firmware * Yes
Hardware mitsubishielectric rv7frllm\/c - No
Operating System mitsubishielectric rv13frm\/c_firmware * Yes
Hardware mitsubishielectric rv13frm\/c - No
Operating System mitsubishielectric rv13frlm\/c_firmware * Yes
Hardware mitsubishielectric rv13frlm\/c - No
Operating System mitsubishielectric rv20frm\/c_firmware * Yes
Hardware mitsubishielectric rv20frm\/c - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mitsubishielectric's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.