VDB
CVE-2026-64691
CVE-2026-64691
PUBLISHED
CVSS 9.8 CRITICAL
Reported by apple · Published July 27, 2026
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.
Risk Scores
CVSS 3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | macOS | 0 |
| Apple | macOS | 0, 0 |
Timeline
- Jul 27, 2026 CVE Published
- Jul 28, 2026 Coalition ESS Score
- Jul 28, 2026 Security Advisory