CVE-2020-9999 Memory corruption in macOS
Processing a maliciously crafted text file may lead to arbitrary code execution on macOS systems.
- 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-2020-9999?
CVE-2020-9999 is a high-severity memory corruption vulnerability in Apple Icloud, published on 8 Dec 2020. 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
A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, iTunes for Windows 12.10.9. Processing a maliciously crafted text file may lead to arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2020-9999?
It affects 7 products.
Products include Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Mac Os X, Apple Tvos and 1 more.
How do I fix CVE-2020-9999?
No fix has been published for CVE-2020-9999 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-9999 being exploited?
There is no known exploitation of CVE-2020-9999 in the wild and no public exploit code.