{"id":"CVE-2020-9991","aliases":["EUVD-2020-30770","GHSA-5pgw-jw9q-8cfq","UBUNTU-CVE-2020-9991"],"status":"published","title":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1,...","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.02822,"percentile":0.86694,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2020-12-08T21:11:39Z","modified":"2026-06-17T03:28:56Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"sqlite","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.17-12fakesync1"]}],"products":[{"vendor":"apple","product":"icloud"},{"vendor":"apple","product":"icloud for windows"},{"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/kb/HT211846","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"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","report"]},{"url":"https://support.apple.com/en-us/HT211847","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"http://seclists.org/fulldisclosure/2020/Dec/32","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9991"},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E"},{"url":"https://github.com/advisories/GHSA-5pgw-jw9q-8cfq"},{"url":"https://ubuntu.com/security/CVE-2020-9991","tags":["report"]},{"url":"https://www.rapid7.com/db/vulnerabilities/apple-osx-sqlite-cve-2020-9991/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-9991","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-9991","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","status":"published","published":"2020-12-08T21:11:39Z","modified":"2024-08-04T10:50:57.927Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30770","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","status":"published","published":"2020-12-08T21:11:39Z","modified":"2024-08-04T10:50:57Z","updated_at":"2026-11-03T03:07:50.893254Z"}],"ghsa":[{"id":"GHSA-5pgw-jw9q-8cfq","title":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1,...","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","status":"published","published":"2022-05-24T17:35:49Z","modified":"2023-02-02T05:01:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:51:08.679679Z"}],"nvd":[{"id":"CVE-2020-9991","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","status":"published","published":"2020-12-08T22:15:19.273Z","modified":"2026-06-17T03:28:56.26Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:27.10541Z"}],"osv":[{"id":"UBUNTU-CVE-2020-9991","description":"This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.","status":"published","published":"2020-12-08T22:15:00Z","modified":"2026-04-22T12:44:54.694947Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:25.728622Z"}]}}