CVE-2022-40266Network attack vector

Authenticated service interruption via crafted FTP command

Published Nov 24, 2022 · Updated Apr 25, 2025

Improper input validation in GOT2000 GT23, GT25, and GT27 FTP server 01.39.000 and earlier allows remote authenticated users to interrupt service. The FTP server accepts a specially crafted command after login without properly validating its input; Mitsubishi Electric has not disclosed the malformed field or failure path. The FTP server function must be enabled and valid login credentials are required; the vendor does not specify whether the service hangs, crashes, or restarts the device.

CVSS severity5.3
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in GOT2000 GT23, GT25, and GT27 FTP server 01.39.000 and earlier allows remote authenticated users to interrupt service. The FTP server accepts a specially crafted command after login without properly validating its input; Mitsubishi Electric has not disclosed the malformed field or failure path. The FTP server function must be enabled and valid login credentials are required; the vendor does not specify whether the service hangs, crashes, or restarts the device.

The record

CVE
CVE-2022-40266
Published
Nov 24, 2022
Updated
Apr 25, 2025
Vendor
Mitsubishi Electric Corporation
Product
GOT2000 Series GT25 model
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=FTP server versions 01.39.000 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mitsubishi Electric Corporation · GOT2000 Series GT25 modelversion=FTP server versions 01.39.000 and prior
Mitsubishi Electric Corporation · GOT2000 Series GT27 modelversion=FTP server versions 01.39.000 and prior
Mitsubishi Electric Corporation · GOT2000 Series GT23 modelversion=FTP server versions 01.39.000 and prior

Published CVSS scores

5.3Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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