CVE-2026-20639

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.

• CWE-190

• https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
• https://support.apple.com/en-us/126796Release 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.

• CVE-2026-20633This issue was addressed with improved handling of symlinks.…5.5
• CVE-2026-20634The issue was addressed with improved memory handling. This …5.5
• CVE-2026-20635The issue was addressed with improved memory handling. This …4.3
• CVE-2026-20636The issue was addressed with improved memory handling. This …6.5
• CVE-2026-20637A use after free issue was addressed with improved memory ma…6.2
• CVE-2026-20638A logic issue was addressed with improved checks. This issue…5.5
• CVE-2026-2064A vulnerability was identified in Portabilis i-Educar up to …5.4
• CVE-2026-20640An inconsistent user interface issue was addressed with impr…4.6
• CVE-2026-20641A privacy issue was addressed with improved checks. This iss…7.1
• CVE-2026-20642An input validation issue was addressed. This issue is fixed…2.4
• CVE-2026-20643A cross-origin issue in the Navigation API was addressed wit…5.4
• CVE-2026-20644The issue was addressed with improved memory handling. This …6.5