{"id":"CVE-2021-1784","aliases":["EUVD-2021-7248","GHSA-mh4j-qch9-f5wf"],"status":"published","title":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership...","description":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.02263,"percentile":0.83251,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2021-09-08T14:56:52Z","modified":"2026-06-17T03:32:33Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT212325","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212326","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212327","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1784"},{"url":"https://github.com/advisories/GHSA-mh4j-qch9-f5wf"}],"sources":{"cve":[{"id":"CVE-2021-1784","description":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.","status":"published","published":"2021-09-08T14:56:52Z","modified":"2024-08-03T16:25:05.761Z","updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-7248","description":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.","status":"published","published":"2021-09-08T14:56:52Z","modified":"2024-08-03T16:25:05Z","updated_at":"2026-11-03T03:25:15.150715Z"}],"ghsa":[{"id":"GHSA-mh4j-qch9-f5wf","title":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership...","description":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.","status":"published","published":"2022-05-24T19:13:39Z","modified":"2023-01-27T05:03:57Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:42:21.502511Z"}],"nvd":[{"id":"CVE-2021-1784","description":"A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.","status":"published","published":"2021-09-08T15:15:09.34Z","modified":"2026-06-17T03:32:33.33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:58.05696Z"}]}}