CVE-2026-43809

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

0.16%

6th percentile - higher than 6% of all known CVEs

Summary

An out-of-bounds read vulnerability in macOS. Fixed by improving bounds checking. An app may cause unexpected system termination.

Risk Assessment

Risk of unexpected system termination by a malicious app, potentially leading to data loss or service disruption.

Recommendation

Immediately update macOS to Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6.

Original NVD description (English source)

An out-of-bounds read was addressed with improved bounds checking. 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.