Code execution via replaceable product files
Published Feb 11, 2022 · Updated Apr 16, 2025
Improper file permissions in Mitsubishi Electric FA engineering software allow remote attackers to execute code through malicious replacement files. Affected installations grant permissions that let attackers replace unspecified product files, which the software subsequently trusts and uses. Exploitation requires user interaction and successful placement of a replacement file; execution can expose or alter information or interrupt the application.
Summary
What happened
Improper file permissions in Mitsubishi Electric FA engineering software allow remote attackers to execute code through malicious replacement files. Affected installations grant permissions that let attackers replace unspecified product files, which the software subsequently trusts and uses. Exploitation requires user interaction and successful placement of a replacement file; execution can expose or alter information or interrupt the application.
The record
- CVE
- CVE-2020-14521
- Published
- Feb 11, 2022
- Updated
- Apr 16, 2025
- Vendor
- Mitsubishi Electric Corporation
- Product
- MELSOFT PX Developer
- Classifications
- CWE-428, T1574.009
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 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.
- Affected versionversion=unspecified <=Version 1.53F
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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