Executive brief
A security issue in macOS could allow a malicious application to bypass its built-in security restrictions, known as a sandbox. The sandbox is designed to prevent apps from accessing sensitive system files or user data without permission. If exploited, a rogue app could potentially access information or perform actions it is not authorized to do.
Technical details
A path handling vulnerability existed in macOS Sequoia and macOS Tahoe that could lead to a sandbox escape. The flaw was rooted in insufficient validation of file paths, which a malicious application could exploit to access resources outside of its designated container. Apple addressed this issue by implementing improved path validation logic. The vulnerability requires a malicious application to be executed on the target system (local attack vector). Patches are available in macOS Sequoia 15.7.8 and macOS Tahoe 26.6.
Affected products
- Apple macOS Sequoia Before 15.7.8
- Apple macOS Tahoe Before 26.6
Timeline
- 2026-07-27: advisory
- 2026-07-27: patched