CyberRota Analysis
AI-GeneratedThe vulnerability allows unauthenticated remote attackers to exploit the POST /api/tunnel/tailscale-install endpoint in 9Router versions prior to 0.4.44, enabling OS command injection due to a lack of authorization checks. If successfully exploited, attackers can execute arbitrary commands with root privileges, posing a severe risk to system integrity and security. Organizations using affected versions of 9Router should prioritize immediate patching to mitigate this critical threat.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
9Router before 0.4.44 contains an OS command injection vulnerability in the unauthenticated POST /api/tunnel/tailscale-install endpoint (this route is not covered by the dashboard middleware matcher, so no authorization check is applied). The sudoPassword field from the request body is written to the stdin of a 'sudo -S sh' child process. When sudo does not prompt for a password (the process runs as root, NOPASSWD is configured, or a recent sudo timestamp cache exists), the sudoPassword value is interpreted by sh as a shell command, allowing a remote unauthenticated attacker to execute arbitrary OS commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2026-07-04 (UTC).