CVE-2025-43520

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.

• CWE-120

• https://support.apple.com/en-us/125632Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125633Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125634Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125635Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125636Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125637Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125638Release Notes, Vendor Advisory
• https://support.apple.com/en-us/125639Release Notes, Vendor Advisory
• https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/Technical Description
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43520US Government Resource

Published

Dec 12, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-43515The issue was addressed by refusing external connections by …8.8
• CVE-2025-43516A session management issue was addressed with improved check…3.3
• CVE-2025-43517A privacy issue was addressed with improved private data red…3.3
• CVE-2025-43518A logic issue was addressed with improved checks. This issue…3.3
• CVE-2025-43519A permissions issue was addressed with additional restrictio…5.5
• CVE-2025-4352A vulnerability, which was classified as critical, has been …9.8
• CVE-2025-43521A downgrade issue affecting Intel-based Mac computers was ad…5.5
• CVE-2025-43522A downgrade issue affecting Intel-based Mac computers was ad…3.3
• CVE-2025-43523A permissions issue was addressed with additional restrictio…5.5
• CVE-2025-43524An access issue was addressed with additional sandbox restri…8.8
• CVE-2025-43526This issue was addressed with improved URL validation. This …9.8
• CVE-2025-43527A permissions issue was addressed with additional restrictio…7.8