What’s Vulnerable › Vulnerabilities
CVE-2023-1618: Authentication Bypass Vulnerability in MELSEC WS Series Ethernet Interface Module
- Severity: high (CVSS 8.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-05-19 · updated 2026-06-17
- Weakness: CWE-489
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.
Affected products
References
- https://jvn.jp/vu/JVNVU96063959
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-138-02
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-002_en.pdf
- https://jvn.jp/vu/JVNVU96063959
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-138-02
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-002_en.pdf
Get alerted when CVE-2023-1618 or the next vulnerability affects your stack