Memory Management Flaw in Apple Operating Systems
CVE-2026-43814

9.8CRITICAL

Key Information:

Vendor

Apple
Status
iOS And iPad OS
Mac OS
TV OS
Watch OS
Vendor
CVE Published:
27 July 2026

What is CVE-2026-43814?

A vulnerability in Apple's operating systems arises from improper memory management, specifically a use after free issue. This flaw can allow an application to exploit freed memory, potentially leading to unexpected system termination and triggering instability in the affected devices. Apple has implemented improvements in memory management to address this vulnerability in iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, and watchOS 26.6, ensuring enhanced system reliability and security.

Affected Version(s)

iOS and iPadOS 0 < 26.6

macOS 0 < 26.6

tvOS 0 < 26.6

References

https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128068

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.