high
7.8
CWE
787
Advisory Published
CVE Published
Updated

CVE-2021-1858

First published: Mon Apr 26 2021(Updated: )

ImageIO. An out-of-bounds write issue was addressed with improved bounds checking.

Credit: Mickey Jin Trend MicroMickey Jin Trend MicroMickey Jin Trend MicroMickey Jin Trend MicroMickey Jin Qi Sun Trend Micro working with Trend Micro product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
Apple tvOS<14.5
14.5
<7.4
7.4
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple iPadOS<14.5
Apple iPhone OS<14.5
Apple Mac OS X=10.14
Apple Mac OS X=10.14.0
Apple Mac OS X=10.14.1
Apple Mac OS X=10.14.2
Apple Mac OS X=10.14.3
Apple Mac OS X=10.14.4
Apple Mac OS X=10.14.4-beta4
Apple Mac OS X=10.14.5
Apple Mac OS X=10.14.6
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_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-security_update_2021-001
Apple Mac OS X=10.14.6-security_update_2021-002
Apple Mac OS X=10.15
Apple Mac OS X=10.15.1
Apple Mac OS X=10.15.2
Apple Mac OS X=10.15.3
Apple Mac OS X=10.15.4
Apple Mac OS X=10.15.5
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6
Apple Mac OS X=10.15.6-supplemental_update
Apple Mac OS X=10.15.7
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 macOS>=11.0<11.3
Apple tvOS<14.5
Apple watchOS<7.4

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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-2021-1858?

    CVE-2021-1858 is a vulnerability in ImageIO that can lead to arbitrary code execution.

  • How severe is CVE-2021-1858?

    CVE-2021-1858 is a serious vulnerability that can lead to arbitrary code execution.

  • Which software versions are affected by CVE-2021-1858?

    CVE-2021-1858 affects Apple iOS up to version 14.5, Apple iPadOS up to version 14.5, Apple watchOS up to version 7.4, Apple macOS Big Sur up to version 11.3, Apple Catalina, and Apple tvOS up to version 14.5.

  • How can I fix CVE-2021-1858?

    To fix CVE-2021-1858, update your Apple device to the latest available version of iOS, iPadOS, watchOS, macOS Big Sur, Catalina, or tvOS.

  • Where can I find more information about CVE-2021-1858?

    You can find more information about CVE-2021-1858 on the official Apple support page: [https://support.apple.com/en-us/HT212326](https://support.apple.com/en-us/HT212326).

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