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 Labs product-security@apple.com

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