Exploited
critical
9.8
Advisory Published
CVE Published
Updated

CVE-2021-1871: 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
debian/webkit2gtk
2.36.4-1~deb10u1
2.38.6-0+deb10u1
2.40.5-1~deb11u1
2.42.1-1~deb11u2
2.40.5-1~deb12u1
2.42.1-1~deb12u1
2.42.1-2
debian/wpewebkit
2.38.6-1~deb11u1
2.38.6-1
2.42.1-1
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
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0.1<11.2
Debian Debian Linux=10.0
Fedoraproject Fedora=33
Apple iOS, iPadOS, and macOS
Apple macOS<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 the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-1871.

  • What is the title of this vulnerability?

    The title of this vulnerability is Apple iOS iPadOS and macOS Remote Code Execution Vulnerability.

  • Which software is affected by this vulnerability?

    Apple iOS, iPadOS, and macOS are affected by this vulnerability.

  • How can a remote attacker exploit this vulnerability?

    A remote attacker can exploit this vulnerability to execute code.

  • Where can I find more information about this vulnerability?

    More information about this vulnerability can be found on the Apple support website: [link](https://support.apple.com/en-us/HT212147) and [link](https://support.apple.com/en-us/HT212146).

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