CVE-2026-43793

CRITICAL | Platform: macOS | Changelog

CVE Details

Description

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

CVSS 3.1 Score

Metric	Value
Base Score	9.8 (CRITICAL)
Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Weakness

CWE-20

References

Apple Security Advisory
NVD Entry
https://support.apple.com/en-us/128067 (Release Notes, Vendor Advisory)
https://support.apple.com/en-us/128071 (Release Notes, Vendor Advisory)