Input Validation Flaw in Apple Products Leading to System Instability
CVE-2026-39868

Currently unrated

Key Information:

Vendor: Apple
Status: iOS And iPad OS; Mac OS
Vendor: CVE Published:; 29 June 2026

What is CVE-2026-39868?

An input validation flaw in Apple's operating systems can permit malicious applications to cause unexpected system terminations or to corrupt kernel memory, leading to potential system instability. Apple has addressed this vulnerability with improved input validation methods in the latest updates for iOS, iPadOS, and macOS Tahoe.

Affected Version(s)

iOS and iPadOS 0 < 26.5.2

macOS 0 < 26.5.2

References

https://support.apple.com/en-us/127594

https://support.apple.com/en-us/127595

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jun 29, 2026
Vulnerability Reserved
Apr 7, 2026

CVE-2026-39868 Data

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