medium
5.5
Advisory Published
CVE Published
Updated

CVE-2021-1766

First published: Tue Jan 26 2021(Updated: )

ImageIO. This issue was addressed with improved checks.

Credit: Danny Rosseau Carve SystemsDanny Rosseau Carve SystemsDanny Rosseau Carve SystemsDanny Rosseau Carve Systems 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 tvOS<14.4
14.4
Apple watchOS<7.3
7.3
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-2021-1766?

    CVE-2021-1766 is a vulnerability related to ImageIO that allows attackers to execute arbitrary code.

  • Which products are affected by CVE-2021-1766?

    CVE-2021-1766 affects macOS Big Sur 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.

  • How severe is CVE-2021-1766?

    CVE-2021-1766 is a vulnerability that allows arbitrary code execution, making it a critical security issue.

  • How can I fix CVE-2021-1766?

    To fix CVE-2021-1766, apply the security updates provided by Apple for the affected products.

  • Where can I find more information about CVE-2021-1766?

    You can find more information about CVE-2021-1766 on the Apple support website. Here are some references: [link1], [link2], [link3].

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