CVE-2020-9838 Memory corruption in iOS
A remote attacker can achieve arbitrary code execution via an out-of-bounds read vulnerability in iOS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-9838?
CVE-2020-9838 is a critical memory corruption vulnerability in Apple Ipados, published on 9 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5. A remote attacker may be able to cause arbitrary code execution.
Weakness: CWE-125
Which versions are affected by CVE-2020-9838?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2020-9838?
No fix has been published for CVE-2020-9838 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-2020-9838 being exploited?
There is no known exploitation of CVE-2020-9838 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-696v-fph2-x9h5.