Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Icloud | < 7.21 |
| 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/32Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430
- https://support.apple.com/en-us/HT211843Vendor Advisory
- https://support.apple.com/en-us/HT211844Vendor Advisory
- https://support.apple.com/en-us/HT211847Vendor Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
- https://support.apple.com/kb/HT211846Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430
- https://support.apple.com/en-us/HT211843Vendor Advisory
- https://support.apple.com/en-us/HT211844Vendor Advisory
- https://support.apple.com/en-us/HT211847Vendor Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
FAQ
What is CVE-2020-9991?
CVE-2020-9991 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2020-9991?
CVE-2020-9991 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-9991?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Tvos.