Executive brief
A vulnerability in macOS Tahoe could allow a malicious application to cause the computer to crash or shut down unexpectedly. This issue affects the stability of the operating system and could lead to data loss if the system terminates while work is in progress. Users should update to macOS Tahoe 26.6 to resolve this issue.
Technical details
A buffer overflow vulnerability was identified in macOS Tahoe prior to version 26.6. The issue was caused by insufficient size validation when handling certain inputs. A malicious application installed on the system could exploit this flaw to trigger a kernel panic or unexpected system termination, leading to a denial-of-service condition. Apple addressed the vulnerability in macOS Tahoe 26.6 by implementing improved size validation checks.
Affected products
- Apple macOS Tahoe before 26.6
Timeline
- 2026-07-27: disclosed
- 2026-07-27: patched: Fixed in macOS Tahoe 26.6