CVE-2020-9909 Memory corruption in iOS
An out-of-bounds read allows attackers with kernel code execution to bypass kernel memory mitigations on Apple devices.
- 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-2020-9909?
CVE-2020-9909 is a medium-severity memory corruption vulnerability in Apple Ipados, published on 16 Oct 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 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.
Weakness: CWE-125
Which versions are affected by CVE-2020-9909?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Tvos, Apple Watchos.
How do I fix CVE-2020-9909?
No fix has been published for CVE-2020-9909 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-2020-9909 being exploited?
There is no known exploitation of CVE-2020-9909 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-c4wh-283h-v2vf.