CVE-2020-9991

moderate-risk
Published 2020-12-08

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.

Do I need to act?

~
2.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (6)

Affected Vendors

Apple

References (16)

Mailing List http://seclists.org/fulldisclosure/2020/Dec/32
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430...
Vendor Advisory 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
Mailing List http://seclists.org/fulldisclosure/2020/Dec/32
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430...
Vendor Advisory 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
44
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 5/34 · Minimal
Exposure 13/34 · Low