Font File Out-of-Bounds Write Vulnerability Patched in macOS Big Sur 11.4 and iOS 14.6

Font File Out-of-Bounds Write Vulnerability Patched in macOS Big Sur 11.4 and iOS 14.6

CVE-2021-30771 · HIGH Severity

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS 14.6. Processing a maliciously crafted font file may lead to arbitrary code execution.

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