CVE-2020-5653: Buffer Overflow
Buffer overflow vulnerability in TCP/IP function included in the firmware of 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) allows a remote unauthenticated attacker to stop the network functions of the products or execute a malicious program via a specially crafted packet.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this buffer overflow vulnerability?
The vulnerability ID for this buffer overflow vulnerability is CVE-2020-5653.
What software is affected by this vulnerability?
The MELSEC iQ-R series firmware, specifically the RJ71EIP91 EtherNet/IP Network Interface Module (serial number '02' or before), and the RJ71PN92 PROFINET IO Controller Module (serial number '01' or before) are affected.
What is the severity of CVE-2020-5653?
The severity of CVE-2020-5653 is critical with a CVSS score of 9.8.
How can I fix this vulnerability?
To fix this vulnerability, it is recommended to update the firmware of the affected MELSEC iQ-R series modules to a version that addresses the buffer overflow issue.
Where can I find more information about CVE-2020-5653?
You can find more information about CVE-2020-5653 on the JVN Vulnerability Database and the Mitsubishi Electric PSIRT websites.