CVE-2026-64705
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7,...
- Published
- Aug 25, 2026
- Updated
- Sep 14, 2026
- Assigning CNA
- apple
- Evidence observed
- Sep 6, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HLow · next 30 days
- Percentile
- 2.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.6. An app may be able to cause unexpected system termination or write kernel memory.
Sources
1Root-cause analysis and proof-of-concept for CVE-2026-64705, a macOS HFS xattr kernel heap overflow. Includes weaponized HFS+ image, patcher, parser, and detailed writeup for educational and defensive research.
Responsible use
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