Vulnerability CVE-2021-20613


Published: 2022-01-14

Description:
Improper initialization vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.16 and prior, FX3U-ENET-L Firmware version 1.16 and prior and FX3U-ENET-P502 Firmware version 1.16 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product by sending specially crafted packets. 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.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-024_en.pdf
https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-07

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