CVE-2026-39873

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious SMB server may lead to unexpected system termination.

• CWE-119

• https://support.apple.com/en-us/128067Release Notes, Vendor Advisory
• https://support.apple.com/en-us/128071Release Notes, Vendor Advisory
• https://support.apple.com/en-us/128072Release Notes, Vendor Advisory

Published

Jul 27, 2026

Last Modified

Jul 28, 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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• CVE-2026-39869The issue was addressed with improved memory handling. This …4.3
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• CVE-2026-39870The issue was addressed with improved memory handling. This …7.5
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• CVE-2026-39872The issue was addressed with improved memory handling. This …6.5
• CVE-2026-39874A permissions issue was addressed with additional restrictio…7.8
• CVE-2026-39875A permissions issue was addressed with additional restrictio…7.8
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