VULNERABILITY INTELLIGENCE

CVE-2021-20598

CVSS score5.3 MEDIUM

EPSS probability1.51%

CISA KEVNot currently listed

Published2021-08-06

Last modified2026-06-17

Description

Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R08/16/32/120SFCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to lockout a legitimate user by continuously trying login with incorrect password.