CVE-2020-27943

A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in tvOS 14.3, iOS 14.3 and iPadOS 14.3, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.2. Processing a maliciously crafted font file may lead to arbitrary code execution.

• CWE-787

• https://support.apple.com/en-us/HT212003Vendor Advisory
• https://support.apple.com/en-us/HT212005Vendor Advisory
• https://support.apple.com/en-us/HT212009Vendor Advisory
• https://support.apple.com/en-us/HT212011Vendor Advisory
• https://support.apple.com/en-us/HT212003Vendor Advisory
• https://support.apple.com/en-us/HT212005Vendor Advisory
• https://support.apple.com/en-us/HT212009Vendor Advisory
• https://support.apple.com/en-us/HT212011Vendor Advisory

Published

Apr 2, 2021

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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