CVE-2026-64762
A memory error in macOS can let an app read beyond its intended memory area, potentially causing the system to crash. The issue is fixed in recent macOS releases. Users should update to the latest version to avoid the problem.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Apple macOS users running versions older than Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6.
Real-world impact
An attacker could exploit the bug to crash the operating system, disrupting services and potentially enabling further attacks.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication or user interaction, and it can completely compromise confidentiality, integrity, and availability.
What to do about it
- 011. Update macOS to at least Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6.
- 022. Restart the computer to complete the update.
NVD-referenced vendor advisory
Timeline
- Jul 27, 2026 · 3d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 28, 2026 · 2d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
How it’s attacked
References & advisories
- support.apple.com/en-us/128067release notesvendor advisory
- support.apple.com/en-us/128071release notesvendor advisory
- support.apple.com/en-us/128072release notesvendor advisory