critical
9.3
CWE
125
Advisory Published
CVE Published
Updated

CVE-2021-1758

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: Peter Nguyen STAR LabsPeter Nguyen STAR LabsPeter Nguyen STAR LabsPeter Nguyen STAR Labs product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple watchOS<7.3
7.3
Apple tvOS<14.4
14.4
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_2019-001
Apple Mac OS X=10.14.6-security_update_2019-002
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

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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-2021-1758?

    CVE-2021-1758 is a vulnerability in the FontParser component that allows for an out-of-bounds read.

  • What is the severity of CVE-2021-1758?

    The severity of CVE-2021-1758 is not specified in the provided information.

  • Which software versions are affected by CVE-2021-1758?

    macOS Big Sur (up to version 11.2), Apple Catalina, Apple Mojave, Apple watchOS (up to version 7.3), Apple iOS (up to version 14.4), Apple iPadOS (up to version 14.4), and Apple tvOS (up to version 14.4) are affected by CVE-2021-1758.

  • How can I fix CVE-2021-1758?

    To fix CVE-2021-1758, it is recommended to update your software to the latest version provided by Apple.

  • Where can I find more information about CVE-2021-1758?

    You can find more information about CVE-2021-1758 at the following references: [https://support.apple.com/en-us/HT212149](https://support.apple.com/en-us/HT212149), [https://support.apple.com/en-us/HT212147](https://support.apple.com/en-us/HT212147), [https://support.apple.com/en-us/HT212148](https://support.apple.com/en-us/HT212148).

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