【中文导读】Multiple 存在信息泄露、拒绝服务风险（高危风险）。具体受影响版本、触发条件和修复方案以 NVD/厂商公告为准。 【原始描述】Multiple versions of RG-EST300 provided by Ruijie Networks provide SSH server functionality. It is not documented in the manual, and enabled in the initial configuration. Anyone with the knowledge of the related credentials can log in to the affected device, leading to information disclosure, altering the system configurations, or causing a denial of service (DoS) condition.