CVE-2023-4088

Local code execution via permissive installation ACLs

Published Sep 20, 2023 · Updated Sep 24, 2024

Incorrect permissions in Mitsubishi Electric FA engineering software allow local users to execute code when installed outside the default folder. Installers leave nondefault installation directories writable, allowing a local user to replace or plant files that the affected software later loads as code. The attacker needs local access; successful execution can disclose, alter, or delete application data or crash the software.

CVSS severity9.3
Critical
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect permissions in Mitsubishi Electric FA engineering software allow local users to execute code when installed outside the default folder. Installers leave nondefault installation directories writable, allowing a local user to replace or plant files that the affected software later loads as code. The attacker needs local access; successful execution can disclose, alter, or delete application data or crash the software.

The record

CVE
CVE-2023-4088
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
Mitsubishi Electric Corporation
Product
MELSOFT PX Developer
Classifications
CWE-276
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=all versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · MELSOFT PX Developerversion=all versions
Mitsubishi Electric Corporation · MELSOFT MaiLabversion=all versions
Mitsubishi Electric Corporation · MX Componentversion=all versions
Mitsubishi Electric Corporation · Data Transfer Classicversion=all versions
Mitsubishi Electric Corporation · GX Works3version=all versions
Mitsubishi Electric Corporation · MELSOFT Update Managerversion=all versions
Mitsubishi Electric Corporation · FX Configurator-FPversion=all versions
Mitsubishi Electric Corporation · Data Transferversion=all versions
Mitsubishi Electric Corporation · FX Configurator-ENversion=all versions
Mitsubishi Electric Corporation · GT SoftGOT1000 Version3version=all versions
Mitsubishi Electric Corporation · FX Configurator-EN-Lversion=all versions
Mitsubishi Electric Corporation · EZSocketversion=all versions
Mitsubishi Electric Corporation · GT Designer3 Version1 (GOT1000)version=all versions
Mitsubishi Electric Corporation · CPU Module Logging Configuration Toolversion=all versions
Mitsubishi Electric Corporation · AL-PCS/WIN-Eversion=all versions
Mitsubishi Electric Corporation · GT SoftGOT2000 Version1version=all versions
Mitsubishi Electric Corporation · GT Designer3 Version1 (GOT2000)version=all versions
Mitsubishi Electric Corporation · MELSOFT FieldDeviceConfiguratorversion=all versions
Mitsubishi Electric Corporation · MELSOFT iQ AppPortalversion=all versions
Mitsubishi Electric Corporation · MELSOFT RT VisualBoxversion=all versions
Mitsubishi Electric Corporation · GX LogViewerversion=all versions
Mitsubishi Electric Corporation · MELSOFT Navigatorversion=all versions
Mitsubishi Electric Corporation · MELSOFT MX Sheetversion=all versions
Mitsubishi Electric Corporation · MELSOFT RT ToolBox3version=all versions
Mitsubishi Electric Corporation · FR Configurator2version=all versions
Mitsubishi Electric Corporation · MELSOFT GX Works2version=all versions

Published CVSS scores

9.3Mitsubishi Electric CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo