VULNERABILITY INTELLIGENCE

CVE-2021-30900

CVSS score7.8 HIGH

EPSS probability5.20%

CISA KEVKnown exploited vulnerability

Published2021-08-24

Last modified2026-06-17

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

Known Exploited Vulnerability

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

Vendor / product: Apple / iOS, iPadOS, and macOS

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.

Weakness classification

nvd@nist.gov: CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

product-security@apple.com — Vendor Advisory
product-security@apple.com — Vendor Advisory
product-security@apple.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource