{"id":"CVE-2021-21511","aliases":["EUVD-2021-8783","GHSA-2gr2-xjj5-q4ff"],"status":"published","title":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in...","description":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01056,"percentile":0.64901,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285","CWE-863"],"published":"2021-02-15T22:10:13Z","modified":"2026-06-17T03:35:42Z","products":[{"vendor":"dell","product":"avamar"},{"vendor":"dell","product":"emc_avamar_server"},{"vendor":"dell","product":"emc_integrated_data_protection_appliance"}],"references":[{"url":"https://www.dell.com/support/kbdoc/en-us/000182926/dsa-2021-033-dell-emc-avamar-server-improper-authorization-vulnerability","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21511"},{"url":"https://github.com/advisories/GHSA-2gr2-xjj5-q4ff"}],"sources":{"cve":[{"id":"CVE-2021-21511","description":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.","status":"published","published":"2021-02-15T22:10:13.905Z","modified":"2024-09-16T19:20:26.9Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-8783","description":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.","status":"published","published":"2021-02-15T22:10:13Z","modified":"2024-09-16T19:20:26Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:55:23.696592Z"}],"ghsa":[{"id":"GHSA-2gr2-xjj5-q4ff","title":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in...","description":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.","status":"published","published":"2022-05-24T17:42:15Z","modified":"2023-01-29T05:05:22Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:45:46.414099Z"}],"nvd":[{"id":"CVE-2021-21511","description":"Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.","status":"published","published":"2021-02-15T22:15:13.897Z","modified":"2026-06-17T03:35:42.077Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:06:50.031227Z"}]}}