CVE-2020-9996

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to elevate privileges.

• CWE-416

• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211850Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory
• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211850Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory

Published

Dec 8, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2020-9990A race condition was addressed with additional validation. T…7.8
• CVE-2020-9991This issue was addressed with improved checks. This issue is…7.5
• CVE-2020-9992This issue was addressed by encrypting communications over t…7.8
• CVE-2020-9993The issue was addressed with improved UI handling. This issu…4.3
• CVE-2020-9994A path handling issue was addressed with improved validation…7.1
• CVE-2020-9995An issue existed in the parsing of URLs. This issue was addr…6.1
• CVE-2020-9997An information disclosure issue was addressed with improved …5.5
• CVE-2020-9999A memory corruption issue was addressed with improved state …7.8