CVE-2020-27931

HIGH

macOS < 11.1.0 - Out-of-bounds Write in Font File Processing

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211843
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211850
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211844
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211931
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212011

Scores

CVSS v3 7.8
EPSS 0.0099
EPSS Percentile 58.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (5)
apple/ipados < 14.0
apple/iphone_os < 14.0
apple/mac_os_x < 11.1.0
apple/tvos < 14.0
apple/watchos < 7.0
Published Apr 02, 2021
Tracked Since Feb 18, 2026