CVE-2026-43778

CRITICAL CVSS 3.1: 9.8 EPSS 0.46%
Updated Jul 29, 2026
Apple
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions 14.0 — 26.6
Fixed In 26.6
Type CWE-416 (Use After Free)
Vendor Apple
Public PoC No

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination or corrupt kernel memory.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 8

Configuration From (including) Up to (excluding)
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
26.6
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
26.6
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
14.0 14.8.8
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
15.0 15.7.8
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
26.0 26.6
Apple Tvos
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
26.6
Apple Visionos
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
26.6
Apple Watchos
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
26.6