CVE-2023-1618

Authentication Bypass Vulnerability in MELSEC WS Series Ethernet Interface Module

HIGH
8.6
CVSS Score
Published: May 19, 2023 at 04:19 AM UTC
Updated: June 17, 2026 at 05:28 AM UTC
2 products affected across 1 vendorMelsec Ws0-Geth00200MELSEC Ws0-geth00200 Firmware

Using MELSEC WS Series WS0-GETH00200 by Mitsubishi Electric Corporation?

Get instant alerts when new vulnerabilities affect MELSEC WS Series WS0-GETH00200 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.6
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-489CWE-1188

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card