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CVE-2021-30900

Known Exploited (CISA KEV)HIGH
7.8
CVSS Severity Score
EPSS Score26.0320%
EPSS Percentile92.65th
PublishedAug 24, 2021
Last ModifiedOct 23, 2025

Vulnerability Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.

Affected Platforms (CPE)

💻
Apple

Ipados

< 14.8.1
💻
Apple

Ipados

= 15.0
💻
Apple

Iphone Os

< 14.8.1
💻
Apple

Iphone Os

= 15.0
💻
Apple

Macos

< 11.6.1

References & Advisories

🔗 https://support.apple.com/en-us/HT212867
🔗 https://support.apple.com/en-us/HT212868
🔗 https://support.apple.com/kb/HT212872
🔗 https://support.apple.com/en-us/HT212867
🔗 https://support.apple.com/en-us/HT212868
🔗 https://support.apple.com/kb/HT212872
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900

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