{"id":"CVE-2021-30827","aliases":["EUVD-2021-17744","GHSA-839f-x26x-pq92"],"status":"published","title":"A permissions issue existed. This issue was addressed with improved permission validation. This...","description":"A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00247,"percentile":0.16086,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-281"],"published":"2021-10-19T13:11:57Z","modified":"2026-06-17T03:50:57Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT212804","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212805","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30827"},{"url":"https://github.com/advisories/GHSA-839f-x26x-pq92"}],"sources":{"cve":[{"id":"CVE-2021-30827","description":"A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.","status":"published","published":"2021-10-19T13:11:57Z","modified":"2024-08-03T22:48:12.66Z","updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2021-17744","description":"A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.","status":"published","published":"2021-10-19T13:11:57Z","modified":"2024-08-03T22:48:12Z","updated_at":"2026-11-03T03:24:40.575187Z"}],"ghsa":[{"id":"GHSA-839f-x26x-pq92","title":"A permissions issue existed. This issue was addressed with improved permission validation. This...","description":"A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.","status":"published","published":"2022-05-24T19:17:59Z","modified":"2023-01-30T05:02:54Z","cwes":["CWE-281"],"updated_at":"2026-11-02T14:46:44.129156Z"}],"nvd":[{"id":"CVE-2021-30827","description":"A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.","status":"published","published":"2021-10-19T14:15:08.707Z","modified":"2026-06-17T03:50:57.723Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-281"],"updated_at":"2026-11-02T14:07:00.137719Z"}]}}