Executive brief
A security issue in macOS Tahoe could allow a person with physical or local access to the computer to cause the system to crash or become unresponsive. This denial of service vulnerability was resolved by removing the problematic code in the latest software update. Users should update to macOS Tahoe 26.6 to ensure system stability.
Technical details
A denial of service vulnerability existed in macOS Tahoe prior to version 26.6. The flaw allowed a local attacker to trigger a system hang or crash, impacting availability. Apple addressed the issue by removing the vulnerable code path entirely. The vulnerability is reachable by a local attacker, though specific component details were not disclosed in the advisory. Users are advised to update to macOS Tahoe 26.6.
Affected products
- Apple macOS Tahoe before 26.6
Timeline
- 2026-07-27: advisory
- 2026-07-27: patched