Out-of-Bounds Read in macOS by Apple
CVE-2026-43809

Currently unrated

Key Information:

Vendor: Apple
Status: Mac OS
Vendor: CVE Published:; 27 July 2026

What is CVE-2026-43809?

An out-of-bounds read vulnerability has been identified in Apple's macOS, which could allow malicious applications to exploit this weakness, potentially leading to unexpected system behavior or termination. This vulnerability has been mitigated through enhanced bounds checking in the latest versions of macOS, specifically Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6.

Affected Version(s)

macOS 0 < 14.8.8

macOS 0 < 15.7.8

macOS 0 < 26.6

References

https://support.apple.com/en-us/128067

https://support.apple.com/en-us/128071

https://support.apple.com/en-us/128072

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jul 27, 2026
Vulnerability Reserved
May 1, 2026

CVE-2026-43809 Data

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