CVE-2026-43768 Denial of service in macOS
An app can cause unexpected system termination on macOS due to improper memory handling, requiring a system update.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-43768?
CVE-2026-43768 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, and only if a user opens a file or follows a link.
Official description
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
Weakness: CWE-400
Which versions are affected by CVE-2026-43768?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-43768?
No fix has been published for CVE-2026-43768 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-2026-43768 being exploited?
There is no known exploitation of CVE-2026-43768 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-5x38-79xh-f5w2.