CVE-2020-27931

A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0. Processing a maliciously crafted font file may lead to arbitrary code execution.

• CWE-787

• https://support.apple.com/en-us/HT211843Vendor Advisory
• https://support.apple.com/en-us/HT211844Vendor Advisory
• https://support.apple.com/en-us/HT211850Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory
• https://support.apple.com/en-us/HT212011Vendor Advisory
• https://support.apple.com/en-us/HT211843Vendor Advisory
• https://support.apple.com/en-us/HT211844Vendor Advisory
• https://support.apple.com/en-us/HT211850Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory
• https://support.apple.com/en-us/HT212011Vendor Advisory

Published

Apr 2, 2021

Last Modified

Jun 17, 2026

Status

Modified

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• CVE-2020-27937A logic issue was addressed with improved state management. …5.5
• CVE-2020-27938A logic issue was addressed with improved state management. …7.8