CVE-2026-20657

A buffer overflow issue was addressed with improved memory handling. 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 Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. Parsing a maliciously crafted file may lead to an unexpected app termination.

• CWE-119
• CWE-125
• CWE-787

• https://support.apple.com/en-us/126792
• https://support.apple.com/en-us/126793Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126794
• https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126796Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126799

Published

Mar 25, 2026

Last Modified

Jun 17, 2026

Status

Modified

• 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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