CVE-2026-84509

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.

• CWE-125

• https://support.apple.com/en-us/149035Release Notes, Vendor Advisory
• https://support.apple.com/en-us/149042Release Notes, Vendor Advisory
• https://support.apple.com/en-us/149043Release Notes, Vendor Advisory

Published

Sep 14, 2026

Last Modified

Sep 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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