CVE-2020-5531

CRITICAL
9.8
CVSS Score
Published: February 17, 2020 at 06:55 AM UTC
Updated: June 17, 2026 at 03:21 AM UTC
16 products affected across 1 vendorQ24DHCCPU V FirmwareR12CCPU V FirmwareRD55UP06 V Firmware

Using Mitsubishi Electric MELSEC C Controller Module and MELIPC Series MI5000 by Mitsubishi Electric Corporation?

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 03
mitsubishielectric-mi5122-vw (same device)
v ≤ 21121
mitsubishielectric-q24dhccpu-v (same device)
v ≤ 21121
mitsubishielectric-q24dhccpu-vg (same device)
v ≤ 11
mitsubishielectric-r12ccpu-v (same device)
v ≤ 8
mitsubishielectric-rd55up06-v (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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