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CVE-2021-30858

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CVE-2021-30858

Published: Aug 24, 2021

Modified: Oct 21, 2025

PUBLISHED

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. 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.

VendorProductVersions

Apple

macOS

affected
unspecified - < 11.6

Apple

iOS

affected
unspecified - < 14.8

References

20210917 APPLE-SA-2021-09-13-5 Safari 14.1.2
mailing-list
x_refsource_FULLDISC
FEDORA-2021-c00e45b6c0
vendor-advisory
x_refsource_FEDORA
DSA-4975
vendor-advisory
x_refsource_DEBIAN
DSA-4976
vendor-advisory
x_refsource_DEBIAN
20210924 APPLE-SA-2021-09-23-1 iOS 12.5.5
mailing-list
x_refsource_FULLDISC
FEDORA-2021-edf6957b7d
vendor-advisory
x_refsource_FEDORA

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