{"id":"CVE-2021-47667","aliases":["EUVD-2021-34675","GHSA-r4mc-p68x-wx22"],"status":"published","title":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6...","description":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.36363,"percentile":0.98505,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2025-04-05T00:00:00Z","modified":"2026-06-17T04:18:16Z","products":[{"vendor":"zend","product":"zendto"},{"vendor":"zendto","product":"zendto"}],"references":[{"url":"https://projectblack.io/blog/zendto-nday-vulnerabilities/","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47667"},{"url":"https://projectblack.io/blog/zendto-nday-vulnerabilities"},{"url":"https://github.com/advisories/GHSA-r4mc-p68x-wx22"}],"sources":{"cve":[{"id":"CVE-2021-47667","description":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.","status":"published","published":"2025-04-05T00:00:00Z","modified":"2025-04-07T16:22:26.249Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-34675","description":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.","status":"published","published":"2025-04-05T00:00:00Z","modified":"2025-04-07T16:22:26Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:52:41.16494Z"}],"ghsa":[{"id":"GHSA-r4mc-p68x-wx22","title":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6...","description":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.","status":"published","published":"2025-04-05T06:30:20Z","modified":"2025-04-05T06:30:20Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:00:49.48461Z"}],"nvd":[{"id":"CVE-2021-47667","description":"An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.","status":"published","published":"2025-04-05T05:15:43.223Z","modified":"2026-06-17T04:18:16.837Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}