CVE-2026-20687

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.

• CWE-416

• https://support.apple.com/en-us/126792Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126793Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126797Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126798Release Notes, Vendor Advisory

Published

Mar 25, 2026

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.

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