CVE-2026-20602 Denial of service in macOS
An app can cause a denial-of-service in macOS due to improper cache handling, requiring users to update their 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-2026-20602?
CVE-2026-20602 is a medium-severity denial of service vulnerability in Apple Macos, published on 11 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The issue was addressed with improved handling of caches. This issue is fixed in macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3. An app may be able to cause a denial-of-service.
Weakness: CWE-400
Which versions are affected by CVE-2026-20602?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2026-20602?
No fix has been published for CVE-2026-20602 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-2026-20602 being exploited?
There is no known exploitation of CVE-2026-20602 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-hxp3-qj63-m9j9.