{"id":"CVE-2021-27692","aliases":["EUVD-2021-14434","GHSA-rxj2-g98j-wfhh"],"status":"published","title":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15...","description":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.03194,"percentile":0.88215,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-78"],"published":"2021-04-15T23:14:32Z","modified":"2026-06-17T03:45:20Z","products":[{"vendor":"tendacn","product":"g1_firmware"},{"vendor":"tendacn","product":"g3_firmware"}],"references":[{"url":"https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27692"},{"url":"https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu"},{"url":"https://github.com/advisories/GHSA-rxj2-g98j-wfhh"}],"sources":{"cve":[{"id":"CVE-2021-27692","description":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input.","status":"published","published":"2021-04-15T23:14:32Z","modified":"2024-08-03T21:26:10.675Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14434","description":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input.","status":"published","published":"2021-04-15T23:14:32Z","modified":"2024-08-03T21:26:10Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-rxj2-g98j-wfhh","title":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15...","description":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input.","status":"published","published":"2022-05-24T17:47:45Z","modified":"2023-01-27T05:02:54Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:42:07.495183Z"}],"nvd":[{"id":"CVE-2021-27692","description":"Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input.","status":"published","published":"2021-04-16T00:15:12.067Z","modified":"2026-06-17T03:45:20.647Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78","CWE-119"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}