CVEvulnerability
CVE-2020-9991
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-12-08
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
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.
Affected configurations
• apple icloud (< 7.21)
• apple icloud (>= 11.0 < 11.4)
• apple ipados (< 14.0)
• apple iphone os (< 14.0)
• apple mac os x (< 11.0.1)
• apple tvos (< 14.0)
• apple watchos (< 7.0)
References
- http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E lists.apache.org
- https://support.apple.com/en-us/HT211843 Vendor Advisory
- https://support.apple.com/en-us/HT211844 Vendor Advisory
- https://support.apple.com/en-us/HT211847 Vendor Advisory
- https://support.apple.com/en-us/HT211850 Vendor Advisory
- https://support.apple.com/en-us/HT211931 Vendor Advisory
- https://support.apple.com/kb/HT211846 Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E lists.apache.org
- https://support.apple.com/en-us/HT211843 Vendor Advisory
- https://support.apple.com/en-us/HT211844 Vendor Advisory
- https://support.apple.com/en-us/HT211847 Vendor Advisory
- https://support.apple.com/en-us/HT211850 Vendor Advisory
- https://support.apple.com/en-us/HT211931 Vendor Advisory
- https://support.apple.com/kb/HT211846 Vendor Advisory