CVE-2020-27930

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. Processing a maliciously crafted font may lead to arbitrary code execution.

• CWE-787
• CWE-787

• http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211928Vendor Advisory
• https://support.apple.com/en-us/HT211929Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory
• https://support.apple.com/en-us/HT211940Vendor Advisory
• https://support.apple.com/en-us/HT211944Vendor Advisory
• https://support.apple.com/en-us/HT211945Vendor Advisory
• https://support.apple.com/en-us/HT211946Vendor Advisory
• https://support.apple.com/en-us/HT211947Vendor Advisory
• http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT211928Vendor Advisory
• https://support.apple.com/en-us/HT211929Vendor Advisory
• https://support.apple.com/en-us/HT211931Vendor Advisory
• https://support.apple.com/en-us/HT211940Vendor Advisory
• https://support.apple.com/en-us/HT211944Vendor Advisory
• https://support.apple.com/en-us/HT211945Vendor Advisory
• https://support.apple.com/en-us/HT211946Vendor Advisory
• https://support.apple.com/en-us/HT211947Vendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27930US Government Resource

Published

Dec 8, 2020

Last Modified

Jun 17, 2026

Status

Analyzed

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