{"id":"CVE-2021-20144","aliases":["EUVD-2021-7601","GHSA-qjc5-hqhg-64c3"],"status":"published","title":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in...","description":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03708,"percentile":0.89831,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2021-12-09T15:19:18Z","modified":"2026-06-17T03:33:20Z","products":[{"vendor":"gryphonconnect","product":"gryphon_tower_firmware"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-51","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20144"},{"url":"https://github.com/advisories/GHSA-qjc5-hqhg-64c3"}],"sources":{"cve":[{"id":"CVE-2021-20144","description":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.","status":"published","published":"2021-12-09T15:19:18Z","modified":"2024-08-03T17:30:07.446Z","updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2021-7601","description":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.","status":"published","published":"2021-12-09T15:19:18Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:09.841069Z"}],"ghsa":[{"id":"GHSA-qjc5-hqhg-64c3","title":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in...","description":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.","status":"published","published":"2021-12-10T00:00:37Z","modified":"2023-02-01T05:07:03Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:50:28.399252Z"}],"nvd":[{"id":"CVE-2021-20144","description":"An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.","status":"published","published":"2021-12-09T16:15:08.077Z","modified":"2026-06-17T03:33:20.847Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":8.3,"vector":"AV:A/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:07:02.189991Z"}]}}