CVE-2021-20599

—

CVSS 3.1

7.5 high

EPSS

1%p71

Published

Oct 14, 2021 (Oct 14, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: mitsubishielectric
Products: r08sfcpu firmware, r16sfcpu firmware, r32sfcpu firmware, r120sfcpu firmware, r08psfcpu firmware, r16psfcpu firmware, r32psfcpu firmware, r120psfcpu firmware
Weakness: CWE-319, CWE-639
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.4%)

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