CVE-2020-5531 - CVE House
Back to Database
Status published Critical CVE-2020-5531

Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000...

Vulnerability Description

Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000 MELSEC-Q Series C Controller Module(Q24DHCCPU-V, Q24DHCCPU-VG User Ethernet port (CH1, CH2): First 5 digits of serial number 21121 or before), MELSEC iQ-R Series C Controller Module / C Intelligent Function Module(R12CCPU-V Ethernet port (CH1, CH2): First 2 digits of serial number 11 or before, and RD55UP06-V Ethernet port: First 2 digits of serial number 08 or before), and MELIPC Series MI5000(MI5122-VW Ethernet port (CH1): First 2 digits of serial number 03 or before, or the firmware version 03 or before) allow remote attackers to cause a denial of service and/or malware being executed via unspecified vectors.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-5531

Credits & Attribution

No credits recorded in the NVD database.

References

More from Mitsubishi Electric Corporation

View All →
CVE-2025-8531
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric...
Medium 6.8
CVE-2025-7731
Information Disclosure Vulnerability in MELSEC iQ-F Series CPU module
High 7.5
CVE-2025-7405
Information Disclosure, Information Tampering, and Denial of Service (DoS) Vulnerability in MELSEC iQ-F Series CPU module
High 7.3
CVE-2025-7376
Information Tampering Vulnerability in Multiple Processes of GENESIS64, ICONICS Suite, MobileHMI, Hyper Historian, AnalytiX, IoTWorX, MC Works64, and GENESIS
Medium 5.9
CVE-2025-5514
Denial-of-Service(DoS) Vulnerability in Web server function on MELSEC iQ-F Series CPU module
Medium 5.3

Affected Vendor

Mitsubishi Electric Corporation

View all reports →

Affected Software

Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000
Vulnerable Versions:
MELSEC-Q Series C Controller Module(Q24DHCCPU-V, Q24DHCCPU-VG User Ethernet port (CH1, CH2): First 5 digits of serial number 21121 or before), MELSEC iQ-R Series C Controller Module / C Intelligent Function Module(R12CCPU-V Ethernet port (CH1, CH2): First 2 digits of serial number 11 or before, and RD55UP06-V Ethernet port: First 2 digits of serial number 08 or before), and MELIPC Series MI5000(MI5122-VW Ethernet port (CH1): First 2 digits of serial number 03 or before, or the firmware version 03 or before)

Timeline

Official Publish: February 17th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.