CVE-2026-43766 Auth bypass in macOS
An attacker with physical access to a locked macOS device may view sensitive user information due to an authorization issue.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-43766?
CVE-2026-43766 is a medium-severity authentication bypass vulnerability in Apple Macos, published on 27 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An authorization issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An attacker with physical access to a locked device may be able to view sensitive user information.
Weakness: CWE-287
Which versions are affected by CVE-2026-43766?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-43766?
No fix has been published for CVE-2026-43766 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-43766 being exploited?
There is no known exploitation of CVE-2026-43766 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-4jxm-4x4x-3vxx.