CVE-2021-20599 CRITICAL

CVE-2021-20599

Vendor Mitsubishi Electric Corporation
Product MELSEC iQ-R Series Safety CPU R08SFCPU
Weakness CWE-319 · Cleartext transmission
Published October 14, 2021
Last update August 3, 2024
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.

Key dates

02Disclosure timeline

October 14, 2021 CVE published
August 3, 2024 Record updated