CVE-2026-43783 Race condition in macOS
A race condition in macOS allows a malicious app to gain root privileges, requiring an update to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-43783?
CVE-2026-43783 is a high-severity vulnerability in Apple Macos, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A race condition was addressed with improved locking. This issue is fixed in macOS Tahoe 26.6. A malicious app may be able to gain root privileges.
Weakness: CWE-362
Which versions are affected by CVE-2026-43783?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-43783?
No fix has been published for CVE-2026-43783 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-43783 being exploited?
There is no known exploitation of CVE-2026-43783 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-m6q6-26j6-5p7f.