CVE-2026-64731
A path handling flaw in macOS allows malicious apps to escape their sandbox, potentially giving them access to system files. The vulnerability is fixed in macOS Sequoia 15.7.8 and macOS Tahoe 26.6. Users should update to these versions to protect their systems.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Mac computers running macOS Sequoia or Tahoe versions older than 15.7.8 and 26.6, respectively.
Real-world impact
An attacker could use a malicious app to read, modify, or delete files outside its allowed area, compromising system integrity and privacy.
Why this severity
The CVSS score of 9.8 reflects that the flaw can be exploited remotely without authentication or user interaction, giving an attacker full control over the system.
What to do about it
- 01Upgrade macOS to Sequoia 15.7.8 or later, or Tahoe 26.6 or later.
- 02Restart the computer after 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