CVEvulnerability

CVE-2021-30900

7.8 HIGH Known exploited Published 2021-08-24 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability — Apple iOS, iPadOS, and macOS

Apple GPU drivers, included in iOS, iPadOS, and macOS, contain an out-of-bounds write vulnerability that may allow a malicious application to execute code with kernel privileges.

Added to KEV
2023-03-30
Remediation due
2023-04-20
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://support.apple.com/en-us/HT21286, https://support.apple.com/en-us/HT212868, https://support.apple.com/kb/HT212872; https://nvd.nist.gov/vuln/detail/CVE-2021-30900
Status
Analyzed
Published
2021-08-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-787

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 configurations

• 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)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References