CVE-2020-27930highunder attackCWE-787

CVE-2020-27930: high-severity vulnerability in Apple macOS

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76Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 7.8epss 22%
from disclosure to weapon61 days
Published on NVDDec 8
1st PoC+61d
CISA KEV+330d
Action required by CISAfederal deadline: 2022-05-03

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In short

A flaw in how Apple devices process font files can allow attackers to run malicious code on your device by sending a specially crafted font. This is a serious vulnerability because it lets attackers take control of your system.

Technical detail

Out-of-bounds write vulnerability (CWE-787) in font processing on Apple platforms (macOS, iOS, watchOS). Attack vector requires user interaction or application-level font rendering; successful exploitation leads to arbitrary code execution with the privileges of the affected application. Fixed through improved input validation in font parsing.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Apple · iOS and iPadOSApple · macOSApple · watchOS
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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