Improper Length Parameter Handling in Mitsubishi Electric FA Engineering Software
CVE-2021-20588

9.8CRITICAL

Key Information:

Vendor

Mitsubishi Electric Corporation

Status
Fa Engineering Software
Vendor
CVE Published:
19 February 2021

What is CVE-2021-20588?

An improper handling of length parameter inconsistency in Mitsubishi Electric FA Engineering Software allows remote, unauthenticated attackers to create a denial of service (DoS) condition. By spoofing responses from MELSEC, GOT, or FREQROL devices and sending crafted reply packets, an attacker may disrupt service and potentially execute malicious code on the victim's machine, even though exploitation has not been consistently demonstrated.

Affected Version(s)

FA Engineering Software CPU Module Logging Configuration Tool versions 1.112R and prior

FA Engineering Software CW Configurator versions 1.011M and prior

FA Engineering Software Data Transfer versions 3.44W and prior

References

https://www.mitsubishielectric.com/en/psirt/vulnerability...
vendor-advisory
https://jvn.jp/vu/JVNVU92330101/index.html
government-resource
https://www.cisa.gov/news-events/ics-advisories/icsa-21-0...
government-resource

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-20588 : Improper Length Parameter Handling in Mitsubishi Electric FA Engineering Software