{"id":"CVE-2021-42071","aliases":["EUVD-2021-29057","GHSA-5pjx-33j8-9h49"],"status":"published","title":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command...","description":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py User-Agent HTTP header.","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":"2026-11-11","score":0.69882,"percentile":0.99382,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-78"],"published":"2021-10-07T16:15:14Z","modified":"2026-06-17T04:09:15Z","exploits":[{"source":"exploitdb","id":"EDB-50098","title":"Visual Tools DVR VX16 4.2.28.0 - OS Command Injection (Unauthenticated)","type":"webapps","platform":"multiple","date":"2021-07-06","url":"https://www.exploit-db.com/exploits/50098"},{"source":"nuclei","id":"CVE-2021-42071","title":"Visual Tools DVR VX16 4.2.28.0 - Unauthenticated OS Command Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-42071.yaml"}],"products":[{"vendor":"visual-tools","product":"dvr_vx16_firmware"}],"references":[{"url":"https://www.exploit-db.com/exploits/50098","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://visual-tools.com/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.swascan.com/security-advisory-visual-tools-dvr-cve-2021-42071/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42071"},{"url":"https://github.com/advisories/GHSA-5pjx-33j8-9h49"}],"sources":{"cve":[{"id":"CVE-2021-42071","description":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py User-Agent HTTP header.","status":"published","published":"2021-10-07T16:15:14Z","modified":"2024-08-04T03:22:25.941Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29057","description":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py User-Agent HTTP header.","status":"published","published":"2021-10-07T16:15:14Z","modified":"2024-08-04T03:22:25Z","updated_at":"2026-11-03T03:24:16.784119Z"}],"ghsa":[{"id":"GHSA-5pjx-33j8-9h49","title":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command...","description":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py Uaer-Agent HTTP header.","status":"published","published":"2022-05-24T19:16:54Z","modified":"2023-01-30T05:02:28Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:46:38.945282Z"}],"nvd":[{"id":"CVE-2021-42071","description":"In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can achieve remote command execution via shell metacharacters in the cgi-bin/slogin/login.py User-Agent HTTP header.","status":"published","published":"2021-10-07T17:15:08.453Z","modified":"2026-06-17T04:09:15.6Z","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"],"updated_at":"2026-11-02T14:06:59.689345Z"}]}}