Resource Management Errors in MELSEC iQ-R Series & PROFINET Products
CVE-2020-5658

7.5HIGH

Key Information:

Vendor: Mitsubishi Electric Corporation
Status: Melsec Iq-r Series
Vendor: CVE Published:; 2 November 2020

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What is CVE-2020-5658?

The resource management errors present in the TCP/IP function of the Mitsubishi MELSEC iQ-R series firmware allow remote unauthenticated attackers to disrupt the network functionality of affected products. Upon sending a specially crafted packet, the vulnerabilities can cause operational impairment in the connected systems. This presents significant risks for enterprises relying on these modules for critical network functions.

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Affected Version(s)

MELSEC iQ-R series RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are '01' or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are '08' or before, RD81MES96N MES Interface Module First 2 digits of serial number are '04' or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are '04' or before