CVE-2026-43806 Denial of service in macOS
A local attacker can cause a denial of service in macOS by exploiting a vulnerability in the operating system.
- 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-2026-43806?
CVE-2026-43806 is a medium-severity denial of service 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
A denial of service issue was addressed by removing the vulnerable code. This issue is fixed in macOS Tahoe 26.6. A local attacker may be able to cause a denial of service.
Weakness: CWE-400
Which versions are affected by CVE-2026-43806?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-43806?
No fix has been published for CVE-2026-43806 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-43806 being exploited?
There is no known exploitation of CVE-2026-43806 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-2cpv-w8w3-mpj4.