What is CVE-2021-30762?

CVE-2021-30762 is a use-after-free vulnerability in Apple iOS WebKit.

How does CVE-2021-30762 impact Apple iOS?

CVE-2021-30762 may allow for code execution when processing maliciously crafted web content on Apple iOS.

Which versions of Apple iOS are affected by CVE-2021-30762?

Apple iOS versions up to but excluding 12.5.4 are affected by CVE-2021-30762.

How can I fix CVE-2021-30762?

Update your Apple iOS device to version 12.5.4 to mitigate the impact of CVE-2021-30762.

Where can I find more information about CVE-2021-30762?

You can find more information about CVE-2021-30762 on the Apple support website: https://support.apple.com/en-us/HT212548.

Vulnerability/
CVE-2021-30762

Exploited

high

8.8

CWE

416

14/6/2021

8/9/2021

3/8/2024

CVE-2021-30762: Apple iOS Use-After-Free Vulnerability

First published: Mon Jun 14 2021(Updated: )

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.5.4. 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: product-security@apple.com an anonymous researcher product-security@apple.com

Affected Software	Affected Version	How to fix
Apple iPhone OS	<12.5.4
Apple iOS	<12.5.4	12.5.4
Apple iOS
	<12.5.4

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

HT212548

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

What is CVE-2021-30762?
CVE-2021-30762 is a use-after-free vulnerability in Apple iOS WebKit.
How does CVE-2021-30762 impact Apple iOS?
CVE-2021-30762 may allow for code execution when processing maliciously crafted web content on Apple iOS.
Which versions of Apple iOS are affected by CVE-2021-30762?
Apple iOS versions up to but excluding 12.5.4 are affected by CVE-2021-30762.
How can I fix CVE-2021-30762?
Update your Apple iOS device to version 12.5.4 to mitigate the impact of CVE-2021-30762.
Where can I find more information about CVE-2021-30762?
You can find more information about CVE-2021-30762 on the Apple support website: https://support.apple.com/en-us/HT212548.

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collector/cisa-known-exploited
source/CISA
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collector/nvd-cve
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canonical/apple iphone os
canonical/apple ios

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