A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service. Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS: All versions prior to 20.4R3-S8; 21.2 versions prior to 21.2R3-S6; 21.3 versions prior to 21.3R3-S5; 22.1 versions prior to 22.1R3-S3; 22.3 versions prior to 22.3R3; 22.4 versions prior to 22.4R3.