What’s Vulnerable › Vulnerabilities

CVE-2021-30928

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-24 · updated 2026-06-17
• Weakness: CWE-787

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.6, watchOS 8, tvOS 15, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15. Processing a maliciously crafted image may lead to arbitrary code execution.

Affected products

• Apple iCloud for Windows: 13.0
• Apple iPadOS: before 14.8 — fixed in 14.8
• Apple Iphone Os: before 15.0 — fixed in 15.0
• Apple macOS: from 11.0 before 11.6 — fixed in 11.6
• Apple tvOS: before 15.0 — fixed in 15.0
• Apple watchOS: before 8.0 — fixed in 8.0

How to fix

Upgrade to a fixed version: Apple iPadOS 14.8; Apple Iphone Os 15.0; Apple macOS 11.6; Apple tvOS 15.0; Apple watchOS 8.0. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212804
• https://support.apple.com/en-us/HT212807
• https://support.apple.com/en-us/HT212814
• https://support.apple.com/en-us/HT212815
• https://support.apple.com/en-us/HT212819
• https://support.apple.com/kb/HT212953
• https://support.apple.com/en-us/HT212804
• https://support.apple.com/en-us/HT212807
• https://support.apple.com/en-us/HT212814
• https://support.apple.com/en-us/HT212815
• https://support.apple.com/en-us/HT212819
• https://support.apple.com/kb/HT212953

Get alerted when CVE-2021-30928 or the next vulnerability affects your stack