CVE-2020-3836 Information disclosure in iOS
A malicious application can determine kernel memory layout due to an access issue in Apple operating systems.
- 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-2020-3836?
CVE-2020-3836 is a medium-severity vulnerability in Apple Ipados, published on 27 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An access issue was addressed with improved memory management. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. A malicious application may be able to determine kernel memory layout.
Which versions are affected by CVE-2020-3836?
It affects 5 products.
Products include Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos.
How do I fix CVE-2020-3836?
No fix has been published for CVE-2020-3836 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3836 being exploited?
There is no known exploitation of CVE-2020-3836 in the wild and no public exploit code.
Other vulnerabilities in Apple Ipados
- CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write
- CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write
- CVE-2025-24085 Apple Multiple Products Use-After-Free
- CVE-2025-31200 Apple Multiple Products Memory Corruption
- CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write
Sources
Also known as GHSA-vv89-4gwh-j87x.