CVE-2026-43793

CriticalCVSS 9.8

Published: 27/07/2026(UTC)Updated: 28/07/2026(UTC)Translated: 28/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.42%

34th percentile - higher than 34% of all known CVEs

Summary

Improved validation of environment variables in macOS. An app may cause unexpected system termination.

Risk Assessment

Risk of system crash (DoS) by a malicious app, potentially disrupting IT services.

Recommendation

Update macOS to Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6.

Original NVD description (English source)

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.