Mitsubishi Electric MELSEC iQ-R Series
Due to improper session management, an attacker may prevent legitimate clients from connecting to an affected product by not properly closing a connection. If multiple MELSOFT transmission ports (TCP/IP) are open, the other ports are not affected. Sequence control is not affected by this vulnerability.CVE-2021-20591 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).