VDB
CVE-2026-64771
CVE-2026-64771
PUBLISHED
CVSS 9.8 CRITICAL
Reported by apple · Published July 27, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.
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 | iOS and iPadOS | 0 |
| Apple | macOS | 0, 0 |
| Apple | tvOS | 0 |
| Apple | visionOS | 0 |
| Apple | tvOS | 0, 0 |
| Apple | iOS and iPadOS | 0, 0 |
| Apple | visionOS | 0, 0 |
| Apple | macOS | 0, 0, 0 |
Timeline
- Jul 27, 2026 CVE Published
- Jul 28, 2026 Coalition ESS Score
- Jul 28, 2026 Security Advisory
- Jul 28, 2026 CVE Updated