Vulnerability in Apple Icloud
CVE-2020-9991
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.
EPSS: 0.028 (84.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apple Icloud
- Apple Icloud For Windows — versions unspecified
- Apple Ios And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone_os
- Apple Macos — versions unspecified
- Apple Mac_os_x
- Apple Tvos — versions unspecified
- Apple Watchos — versions unspecified
Public proof-of-concept exploits
References
- product-security@apple.com (x_refsource_CONFIRM, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- product-security@apple.com (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2020-9991?
- CVE-2020-9991 is a high-severity vulnerability in Apple Icloud. CVSS score: 7.5/10. Published 2020-12-08.
- How severe is CVE-2020-9991?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-9991 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.