CVE-2020-9943

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0. A malicious application may be able to read restricted memory.

• CWE-125

• http://seclists.org/fulldisclosure/2020/Dec/26Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT212011Vendor Advisory
• http://seclists.org/fulldisclosure/2020/Dec/26Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT212011Vendor 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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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