Exploited
high
8.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2021-30661: Apple Multiple Products Use-After-Free Vulnerability

First published: Mon Apr 26 2021(Updated: )

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Credit: yangkang @dnpushme 360 ATAyangkang &zerokeeper&bianliang @dnpushme 360 ATAyangkang @dnpushme 360 ATAyangkang @dnpushme 360 ATAyangkang @dnpushme 360 ATAyangkang &zerokeeper&bianliang @dnpushme 360 ATA product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
Apple Safari<14.1
14.1
Apple tvOS<14.5
14.5
<7.4
7.4
Apple macOS Big Sur<11.3
11.3
Apple iOS<12.5.3
12.5.3
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0
Apple Safari<14.1
Apple iPadOS<14.5
Apple iPhone OS<12.5.3
Apple iPhone OS>=14.0<14.5
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-2021-30661?

    CVE-2021-30661 is a use-after-free vulnerability found in Apple iOS, iPadOS, macOS, watchOS, tvOS, and Safari WebKit Storage.

  • What is the severity of CVE-2021-30661?

    The severity of CVE-2021-30661 is not mentioned in the provided information.

  • How does CVE-2021-30661 work?

    CVE-2021-30661 allows for code execution when processing maliciously crafted web content.

  • Which Apple products are affected by CVE-2021-30661?

    Apple iOS, iPadOS, macOS, watchOS, tvOS, and Safari WebKit Storage are affected by CVE-2021-30661.

  • How do I fix CVE-2021-30661?

    To fix CVE-2021-30661, update your Apple devices to the recommended versions provided by Apple.

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