Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 26.6 |
| Apple | Iphone Os | < 26.6 |
| Apple | Macos | >= 15.0, < 15.7.8 |
| Apple | Tvos | < 26.6 |
| Apple | Visionos | < 26.6 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/128066Release NotesVendor Advisory
- https://support.apple.com/en-us/128067Release NotesVendor Advisory
- https://support.apple.com/en-us/128069Release NotesVendor Advisory
- https://support.apple.com/en-us/128070Release NotesVendor Advisory
- https://support.apple.com/en-us/128071Release NotesVendor Advisory
FAQ
What is CVE-2026-64771?
CVE-2026-64771 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2026-64771?
CVE-2026-64771 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-64771?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos, Apple Visionos.