CVE-2023-1618

Name: CVE-2023-1618
Creator: NVD / NIST
Published: 2023-05-19T05:15:20.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2023-1618 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Active Debug Code vulnerability in Mitsubishi Electric Corporation MELSEC WS Series WS0-GETH00200 Serial number 2310 **** and prior allows a remote unauthenticated attacker to bypass authentication and illegally log into the affected module by connecting to it via telnet which is hidden function and is enabled by default when shipped from the factory. As a result, a remote attacker with unauthorized login can reset the module, and if certain conditions are met, he/she can disclose or tamper with the module's configuration or rewrite the firmware.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

Active Debug Code vulnerability in Mitsubishi Electric Corporation MELSEC WS Series WS0-GETH00200 Serial number 2310 **** and prior allows a remote unauthenticated attacker to bypass authentication and illegally log into the affected module by connecting to it via telnet which is hidden function and is enabled by default when shipped from the factory. As a result, a remote attacker with unauthorized login can reset the module, and if certain conditions are met, he/she can disclose or tamper with the module's configuration or rewrite the firmware.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

1.13%

62.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mitsubishielectric	Melsec Ws0-Geth00200 Firmware	All versions

References

https://jvn.jp/vu/JVNVU96063959Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-138-02Mitigation, Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-002_en.pdfVendor Advisory
https://jvn.jp/vu/JVNVU96063959Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-23-138-02Mitigation, Third Party Advisory, US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-002_en.pdfVendor Advisory

Timeline

Published: May 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-1618?

How severe is CVE-2023-1618?

CVE-2023-1618 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2023-1618?

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-2023-1618?

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

Scan your code now

Source: NVD / NIST