Vulnerability CVE-2021-20612


Published: 2022-01-14

Description:
Lack of administrator control over security vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.14 and prior, FX3U-ENET-L Firmware version 1.14 and prior and FX3U-ENET-P502 Firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product or other unspecified effects by sending specially crafted packets to an unnecessary opening of TCP port. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.

 References:
https://jvn.jp/vu/JVNVU93268332/index.html
https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-01
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-023_en.pdf

Copyright 2022, cxsecurity.com

 

Back to Top