CVE-2020-5531 Explained : Impact and Mitigation

Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000 are affected by a vulnerability that allows remote attackers to cause a denial of service and execute malware.

Understanding CVE-2020-5531

This CVE involves a security issue in Mitsubishi Electric products that can lead to a denial of service and potential malware execution.

What is CVE-2020-5531?

The vulnerability in Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000 allows attackers to trigger a denial of service and potentially execute malware through unspecified vectors.

The Impact of CVE-2020-5531

The vulnerability can result in a denial of service condition and enable the execution of malware by remote attackers, posing a significant risk to affected systems.

Technical Details of CVE-2020-5531

This section provides detailed technical information about the CVE-2020-5531 vulnerability.

Vulnerability Description

The vulnerability in Mitsubishi Electric products allows remote attackers to exploit unspecified vectors to cause a denial of service and execute malware.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited remotely through unspecified vectors, allowing attackers to disrupt services and potentially execute malicious code.

Mitigation and Prevention

To address CVE-2020-5531, follow these mitigation strategies:

Immediate Steps to Take

Apply security patches provided by Mitsubishi Electric
Implement network segmentation to limit exposure
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software to the latest versions
Conduct security assessments and penetration testing
Educate staff on cybersecurity best practices

Patching and Updates

Stay informed about security advisories from Mitsubishi Electric
Apply patches promptly to mitigate the risk of exploitation