CVE-2020-9920 Path traversal in iOS
A malicious mail server can overwrite arbitrary mail files due to improper path validation in Apple operating systems.
- 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-2020-9920?
CVE-2020-9920 is a critical path traversal vulnerability in Apple Ipados, published on 22 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A path handling issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, watchOS 6.2.8. A malicious mail server may overwrite arbitrary mail files.
Weakness: CWE-22
Which versions are affected by CVE-2020-9920?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Watchos.
How do I fix CVE-2020-9920?
No fix has been published for CVE-2020-9920 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-9920 being exploited?
There is no known exploitation of CVE-2020-9920 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-r6fc-jj24-8qhw.