MELSEC-Q Series Q04UDVCPU vulnerabilities | LiveThreat CVE Feed — Verisq

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MS

Product

MELSEC-Q Series Q04UDVCPU

by Mitsubishi Electric Corporation · last CVE Sep 19, 2025

9

CVEs

0

On KEV

9.8

Max CVSS

0

New 30D

Vulnerabilities9 In the news0 Timeline

Severity mix

Critical 5High 3Medium 1Low 0

Severity

All severities9 Critical5 High3 Medium1 Low0

Exploitation

On CISA KEV0 Exploited in the wild0

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Add MELSEC-Q Series Q04UDVCPU to your stack to get only the CVEs that touch what you run.

CVE	CVSS	EPSS	Published	Summary · affected versions
CVE-2021-20611	7.5	3%	Dec 1	Improper Input Validation vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU,… Affected: The first 5 digits of serial No. "23071" and prior
CVE-2021-20610	7.5	3%	Dec 1	Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R… Affected: The first 5 digits of serial No. "23071" and prior
CVE-2021-20609	7.5	3%	Dec 1	Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series… Affected: The first 5 digits of serial No. "23071" and prior