CVE-2026-84521

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27. An app may be able to cause unexpected system termination.

• CWE-416

• https://support.apple.com/en-us/149034Release Notes, Vendor Advisory
• https://support.apple.com/en-us/149035Release Notes, Vendor Advisory
• https://support.apple.com/en-us/149038Release Notes, Vendor Advisory
• https://support.apple.com/en-us/149041Release 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 16, 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-2026-84516An out-of-bounds read was addressed with improved bounds che…8.1
• CVE-2026-84517An integer overflow was addressed with improved input valida…5.5
• CVE-2026-84518This issue was addressed through improved state management. …4.3
• CVE-2026-84519An out-of-bounds write issue was addressed with improved bou…6.5
• CVE-2026-8452Memory overflow vulnerability NetScaler ADC and NetScaler Ga…9.8
• CVE-2026-84520A buffer overflow was addressed with improved size validatio…9.8
• CVE-2026-84522A race condition was addressed with improved state managemen…5.9
• CVE-2026-84523An out-of-bounds write issue was addressed with improved bou…5.5
• CVE-2026-84524An out-of-bounds read was addressed with improved bounds che…4.3
• CVE-2026-84525A logging issue was addressed with improved data redaction. …5.5
• CVE-2026-84526An out-of-bounds write issue was addressed with improved bou…4.3
• CVE-2026-84527A logging issue was addressed with improved data redaction. …5.5