CVE-2026-64691

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

0.34%

27th percentile - higher than 27% of all known CVEs

Summary

A buffer overflow issue was fixed with improved size validation. The vulnerability affects macOS Tahoe. An app may cause unexpected system termination.

Risk Assessment

The risk is that a malicious app could trigger a system crash, potentially causing service disruption.

Recommendation

Update macOS Tahoe to version 26.6 to remediate the vulnerability.

Original NVD description (English source)

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.