high
8.8
CWE
125
Advisory Published
CVE Published
Updated

CVE-2021-1792

First published: Tue Jan 26 2021(Updated: )

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.

Credit: Mickey Jin & Junzhi Lu Trend Micro working with Trend MicroMickey Jin & Junzhi Lu Trend Micro working with Trend MicroMickey Jin & Junzhi Lu Trend Micro working with Trend MicroMickey Jin & Junzhi Lu Trend Micro working with Trend Micro product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iPadOS<14.4
Apple iPhone OS<14.4
Apple Mac OS X>=10.14<10.14.6
Apple Mac OS X>=10.15<10.15.7
Apple Mac OS X=10.14.6
Apple Mac OS X=10.14.6-security_update_2019-004
Apple Mac OS X=10.14.6-security_update_2019-005
Apple Mac OS X=10.14.6-security_update_2019-006
Apple Mac OS X=10.14.6-security_update_2019-007
Apple Mac OS X=10.14.6-security_update_2020-001
Apple Mac OS X=10.14.6-security_update_2020-002
Apple Mac OS X=10.14.6-security_update_2020-003
Apple Mac OS X=10.14.6-security_update_2020-004
Apple Mac OS X=10.14.6-security_update_2020-005
Apple Mac OS X=10.14.6-security_update_2020-006
Apple Mac OS X=10.14.6-security_update_2020-007
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0<11.2
Apple tvOS<14.4
Apple watchOS<7.3
Apple watchOS<7.3
7.3
Apple tvOS<14.4
14.4
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-1792?

    CVE-2021-1792 is a vulnerability in CoreText that allows for an out-of-bounds read.

  • How does CVE-2021-1792 affect macOS Big Sur?

    CVE-2021-1792 affects macOS Big Sur versions up to and including 11.2.

  • How does CVE-2021-1792 affect Apple watchOS?

    CVE-2021-1792 affects Apple watchOS versions up to and including 7.3.

  • How can I fix CVE-2021-1792 on macOS Big Sur?

    To fix CVE-2021-1792 on macOS Big Sur, update to version 11.2 or later.

  • Where can I find more information about CVE-2021-1792?

    You can find more information about CVE-2021-1792 on the official Apple support page: https://support.apple.com/en-us/HT212149

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