{"id":"CVE-2020-9855","aliases":["EUVD-2020-30634","GHSA-326p-6v47-q438"],"status":"published","title":"A validation issue existed in the handling of symlinks. This issue was addressed with improved...","description":"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. 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":"2026-11-09","score":0.00273,"percentile":0.19774,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-06-09T16:17:52Z","modified":"2026-06-17T03:28:41Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/HT211170","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9855"},{"url":"https://github.com/advisories/GHSA-326p-6v47-q438"}],"sources":{"cve":[{"id":"CVE-2020-9855","description":"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.","status":"published","published":"2020-06-09T16:17:52Z","modified":"2024-08-04T10:43:05.428Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30634","description":"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.","status":"published","published":"2020-06-09T16:17:52Z","modified":"2024-08-04T10:43:05Z","updated_at":"2026-11-03T03:07:52.605769Z"}],"ghsa":[{"id":"GHSA-326p-6v47-q438","title":"A validation issue existed in the handling of symlinks. This issue was addressed with improved...","description":"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.","status":"published","published":"2022-05-24T17:19:46Z","modified":"2023-01-29T05:02:52Z","updated_at":"2026-11-02T14:45:11.402148Z"}],"nvd":[{"id":"CVE-2020-9855","description":"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.","status":"published","published":"2020-06-09T17:15:15.363Z","modified":"2026-06-17T03:28:41.373Z","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-20"],"updated_at":"2026-11-02T14:06:05.962132Z"}]}}