CVE-2025-43520 Apple — Exploit & Vulnerability Details HIGH

Parameter	Value
CVSS	7.1 (HIGH)
Affected Versions	15.0 — 26.1
Fixed In	18.7.2
Type	CWE-787 (Out-of-bounds Write), CWE-120 (Buffer Copy without Checking Size)
Vendor	Apple
Public PoC	No

A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.

Attack Parameters

Attack Vector

Local

Requires local access

Attack Complexity

Low

Easy to exploit

Privileges Required

Low

Basic privileges needed

User Interaction

None

No user interaction needed

Impact Assessment

Confidentiality

None

No data leak

Integrity

High

Complete data modification

Availability

High

Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

CWE-120 Buffer Copy without Checking Size

Vulnerable Products 10

Configuration	From (including)	Up to (excluding)
Apple Ipados cpe:2.3:o:apple:ipados::::::::	—	`18.7.2`
Apple Ipados cpe:2.3:o:apple:ipados::::::::	`26.0`	`26.1`
Apple Iphone_Os cpe:2.3:o:apple:iphone_os::::::::	—	`18.7.2`
Apple Iphone_Os cpe:2.3:o:apple:iphone_os::::::::	`26.0`	`26.1`
Apple Macos cpe:2.3:o:apple:macos::::::::	—	`14.8.2`
Apple Macos cpe:2.3:o:apple:macos::::::::	`15.0`	`15.7.2`
Apple Macos cpe:2.3:o:apple:macos::::::::	`26.0`	`26.1`
Apple Tvos cpe:2.3:o:apple:tvos::::::::	—	`26.1`
Apple Visionos cpe:2.3:o:apple:visionos::::::::	—	`26.1`
Apple Watchos cpe:2.3:o:apple:watchos::::::::	—	`26.1`