Denial of Service Vulnerability in Apple macOS Products
CVE-2026-43777

Currently unrated

Key Information:

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

What is CVE-2026-43777?

A remote attacker may exploit a vulnerability in macOS products through improper input validation, potentially leading to a denial of service. This issue has been addressed in the latest versions of macOS Sequoia, Sonoma, and Tahoe through improved validation techniques, ensuring enhanced protection against such threats.

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-2026-43777 Data

JSON