CVE-2023-4562

Name: CVE-2023-4562
Creator: NVD / NIST
Published: 2023-10-13T02:15:09.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2023-4562 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages. . EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.85%

53.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mitsubishielectric	Fx3g-14 Mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-14 Mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-14 Mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-14 Mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-14 Mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-14 Mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-14mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-14mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-14mr\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-14mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-14mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-14mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-14mt\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-14mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-232adp\(-Mb\) Firmware	All versions
Mitsubishielectric	Fx3g-24 Mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-24 Mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-24 Mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-24 Mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-24 Mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-24 Mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-24mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-24mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-24mr\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-24mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-24mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-24mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-24mt\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-24mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-32 Mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-3a-Adp Firmware	All versions
Mitsubishielectric	Fx3g-40 Mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-40 Mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-40 Mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-40 Mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-40 Mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-40 Mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-40mr\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-40mr\/Es Firmware	All versions
Mitsubishielectric	Fx3g-40mr\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-40mt\/Ds Firmware	All versions
Mitsubishielectric	Fx3g-40mt\/Dss Firmware	All versions
Mitsubishielectric	Fx3g-40mt\/Es Firmware	All versions
Mitsubishielectric	Fx3g-40mt\/Es-A Firmware	All versions
Mitsubishielectric	Fx3g-40mt\/Ess Firmware	All versions
Mitsubishielectric	Fx3g-485adp\(-Mb\) Firmware	All versions
Mitsubishielectric	Fx3g-4ad-Adp Firmware	All versions
Mitsubishielectric	Fx3g-4ad-Pt-Adp Firmware	All versions
Mitsubishielectric	Fx3g-4ad-Ptw-Adp Firmware	All versions
Mitsubishielectric	Fx3g-4ad-Tc-Adp Firmware	All versions

Showing 50 of 190 affected configurations. See NVD for the full list.

References

https://jvn.jp/vu/JVNVU90509290/Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdfVendor Advisory
https://jvn.jp/vu/JVNVU90509290/Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-285-13Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-012_en.pdfVendor Advisory

Timeline

Published: Oct 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4562?

How severe is CVE-2023-4562?

CVE-2023-4562 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4562?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4562?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST