CVE-2021-30900

high

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.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900

https://support.apple.com/kb/HT212872

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

https://support.apple.com/en-us/HT212867

Details

Source: Mitre, NVD

Published: 2021-08-24

Updated: 2025-10-23

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H