high
7.8
CWE
20 125
Advisory Published
CVE Published
Updated

CVE-2021-30789: Input Validation

First published: Mon Jul 19 2021(Updated: )

CoreText. An out-of-bounds read was addressed with improved input validation.

Credit: Sunglin Knownsec 404 teamMickey Jin @patch1t Trend MicroMickey Jin @patch1t Trend MicroSunglin Knownsec 404 teamMickey Jin @patch1t Trend MicroSunglin Knownsec 404 teamMickey Jin @patch1t Trend MicroSunglin Knownsec 404 team product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iPhone OS<14.7
Apple Mac OS X>=10.15<=10.15.6
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS<11.5
Apple macOS>=11.0<11.5
Apple tvOS<14.7
Apple watchOS<7.6
Apple watchOS<7.6
7.6
Apple Catalina
Apple macOS Big Sur<11.5
11.5
Apple tvOS<14.7
14.7

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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-2021-30789?

    CVE-2021-30789 is a vulnerability in CoreText that allows an out-of-bounds read.

  • What software is affected by CVE-2021-30789?

    Apple watchOS up to version 7.6, Apple tvOS up to version 14.7, Apple Catalina, and Apple macOS Big Sur up to version 11.5 are affected by CVE-2021-30789.

  • What is the severity of CVE-2021-30789?

    The severity of CVE-2021-30789 has not been specified.

  • How can I fix CVE-2021-30789?

    To fix CVE-2021-30789, update your software to the latest version provided by Apple.

  • Where can I find more information about CVE-2021-30789?

    You can find more information about CVE-2021-30789 on the Apple support page.

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