Exploited
critical
9.8
Advisory Published
CVE Published
Updated

CVE-2021-1870: Apple iOS, iPadOS, and macOS Remote Code Execution Vulnerability

First published: Tue Jan 26 2021(Updated: )

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Credit: an anonymous researcher an anonymous researcher an anonymous researcher an anonymous researcher product-security@apple.com product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple Ipad Os<14.4
Apple iPhone OS<14.4
Apple Mac OS X>=10.15<10.15.7
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0.1<11.2
WebKitGTK WebKitGTK<2.30.6
Fedoraproject Fedora=32
Fedoraproject Fedora=33
<14.4
<14.4
>=10.15<10.15.7
=10.15.7
=10.15.7-security_update_2020-001
=10.15.7-supplemental_update
>=11.0.1<11.2
<2.30.6
=32
=33
Apple iOS, iPadOS, and macOS

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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-2021-1870?

    CVE-2021-1870 is a vulnerability in Apple iOS, iPadOS, and macOS WebKit that can allow a remote attacker to execute code.

  • How does CVE-2021-1870 impact Apple devices?

    CVE-2021-1870 can potentially allow a remote attacker to execute code on affected Apple devices running iOS, iPadOS, and macOS.

  • Which software versions are affected by CVE-2021-1870?

    CVE-2021-1870 affects Apple iOS, iPadOS, and macOS up to version 11.2 for macOS Big Sur, up to version 14.4 for iOS, and up to version 14.4 for iPadOS.

  • How can I fix CVE-2021-1870?

    To fix CVE-2021-1870, it is recommended to update your Apple devices to the latest available software versions provided by Apple.

  • Where can I find more information about CVE-2021-1870?

    You can find more information about CVE-2021-1870 on the official Apple support page: [link](https://support.apple.com/en-us/HT212147)

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