CVE-2026-64702
This vulnerability allows an application to escape its sandbox on macOS, potentially giving it access to system resources. It was fixed in macOS Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS score is 9.8, indicating a critical risk.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
macOS Sequoia, Sonoma, and Tahoe versions before 15.7.8, 14.8.8, and 26.6 respectively.
Real-world impact
An attacker could use a malicious app to escape its sandbox, gaining unauthorized access to system files, data, or other applications.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability can be exploited remotely with no authentication or user interaction, and it can compromise confidentiality, integrity, and availability of the system.
What to do about it
- 01Upgrade macOS to Sequoia 15.7.8 or later, Sonoma 14.8.8 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.
- Jul 30, 2026 · 2h agoAdvisory updatedThe NVD record was last revised.
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