{"id":"CVE-2021-3277","aliases":["EUVD-2021-26615","GHSA-xj6h-r3q8-7cmf"],"status":"published","title":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper...","description":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.59023,"percentile":0.9912,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2021-06-07T21:05:03Z","modified":"2026-06-17T04:04:52Z","products":[{"vendor":"nagios","product":"nagios_xi"}],"references":[{"url":"https://asaf.me/2021/01/21/nagios-xi-5-7-5-remote-code-execution/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3277"},{"url":"https://github.com/advisories/GHSA-xj6h-r3q8-7cmf"}],"sources":{"cve":[{"id":"CVE-2021-3277","description":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.","status":"published","published":"2021-06-07T21:05:03Z","modified":"2024-08-03T16:53:17.204Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26615","description":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.","status":"published","published":"2021-06-07T21:05:03Z","modified":"2024-08-03T16:53:17Z","updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-xj6h-r3q8-7cmf","title":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper...","description":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.","status":"published","published":"2022-05-24T19:04:23Z","modified":"2023-01-29T05:06:55Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:46:07.317218Z"}],"nvd":[{"id":"CVE-2021-3277","description":"Nagios XI 5.7.5 and earlier allows authenticated admins to upload arbitrary files due to improper validation of the rename functionality in custom-includes component, which leads to remote code execution by uploading php files.","status":"published","published":"2021-06-07T22:15:07.827Z","modified":"2026-06-17T04:04:52.737Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}