Is CVE-2025-43520 actively exploited?

CVE-2025-43520 has no public evidence of in-the-wild exploitation as of 2026-04-03.

What is the CVSS score for CVE-2025-43520?

CVE-2025-43520 has a CVSS score of 5.5 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2025-43520?

Patch guidance is available from apple security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-43520.

CVE-2025-43520 - remediation guidance & executive summary

Q: Which products are affected by CVE-2025-43520?

10 products: apple ipados, apple ipados, apple iphone os, apple iphone os, apple macos, and 5 more.

Description

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

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-120

Metadata

Primary Vendor: APPLE
Published: 12/12/2025
Last Modified: 4/3/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

apple : ipadosapple : ipadosapple : iphone_osapple : iphone_osapple : macosapple : macosapple : macosapple : tvosapple : visionosapple : watchos

Remediation Guidance

Executive Summary

View on NIST NVD