CVSS 3.1 Score 7.5 of 10 (high)


Published Aug 3, 2023
Updated: Aug 11, 2023


CVE-2023-38744 is a denial-of-service (DoS) vulnerability that affects the CJ Series CJ2 CPU unit and the CS/CJ Series EtherNet/IP unit. This vulnerability occurs due to improper validation of a specified type of input issue in the built-in EtherNet/IP port. If an affected product receives a specially crafted packet from a remote unauthenticated attacker, it may lead to a DoS condition. The affected products include CJ2M CPU Unit CJ2M-CPU3[] Unit version 2.18 and earlier, CJ2H CPU Unit CJ2H-CPU6[]-EIP Unit version 3.04 and earlier, CS1W-EIP21 V3.04 and earlier, and CJ1W-EIP21 V3.04 and earlier versions of CS/CJ Series EtherNet/IP Units. The vulnerability has a base severity rating of HIGH according to [email protected], with an exploitability score of 3.9 and an impact score of 3.6. It poses a potential danger to organizations as it could result in a denial-of-service condition for the affected products if exploited by an attacker over the network.


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