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CVE-2021-30883

Known Exploited (CISA KEV)HIGH

7.8

CVSS Severity Score

EPSS Score91.2030%

EPSS Percentile89.64th

PublishedAug 24, 2021

Last ModifiedOct 23, 2025

Vulnerability Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

Affected Platforms (CPE)

💻

Apple

Ipados

< 14.8.1

💻

Apple

Ipados

>= 15.0 and < 15.0.2

💻

Apple

Iphone Os

< 14.8.1

💻

Apple

Iphone Os

>= 15.0 and < 15.0.2

💻

Apple

Macos

>= 11.0 and < 11.6.1

💻

Apple

Macos

= 12.0

💻

Apple

Tvos

< 15.1

💻

Apple

Watchos

< 8.1

References & Advisories

🔗 https://support.apple.com/en-us/HT212846

🔗 https://support.apple.com/en-us/HT212868

🔗 https://support.apple.com/en-us/HT212869

🔗 https://support.apple.com/en-us/HT212872

🔗 https://support.apple.com/en-us/HT212874

🔗 https://support.apple.com/en-us/HT212876

🔗 https://support.apple.com/en-us/HT212846

🔗 https://support.apple.com/en-us/HT212868

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