{"id":"CVE-2020-9978","aliases":["EUVD-2020-30757","GHSA-5hfq-49hj-vmf5"],"status":"published","title":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur...","description":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.","severity":{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00539,"percentile":0.45639,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-04-02T17:25:14Z","modified":"2026-06-17T03:28:54Z","products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"},{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"tvos"},{"vendor":"apple","product":"watchos"}],"references":[{"url":"https://support.apple.com/en-us/HT211843","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT211850","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT211844","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT211931","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212011","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9978"},{"url":"https://github.com/advisories/GHSA-5hfq-49hj-vmf5"}],"sources":{"cve":[{"id":"CVE-2020-9978","description":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.","status":"published","published":"2021-04-02T17:25:14Z","modified":"2024-08-04T10:50:57.782Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30757","description":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.","status":"published","published":"2021-04-02T17:25:14Z","modified":"2024-08-04T10:50:57Z","updated_at":"2026-11-03T03:07:51.449946Z"}],"ghsa":[{"id":"GHSA-5hfq-49hj-vmf5","title":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur...","description":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.","status":"published","published":"2022-05-24T17:46:15Z","modified":"2023-01-29T05:06:13Z","updated_at":"2026-11-02T14:45:58.601163Z"}],"nvd":[{"id":"CVE-2020-9978","description":"This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.","status":"published","published":"2021-04-02T18:15:18.827Z","modified":"2026-06-17T03:28:54.827Z","cvss":[{"version":"3.1","score":4.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.7,"vector":"AV:A/AC:L/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:37.687844Z"}]}}