CVE-2020-9911 Security feature bypass in Safari
A logic issue in Safari Reader mode allows remote attackers to bypass the Same Origin Policy, requiring users to update their browser or operating system.
- 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-2020-9911?
CVE-2020-9911 is a high-severity 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
A logic issue was addressed with improved restrictions. This issue is fixed in iOS 13.6 and iPadOS 13.6, Safari 13.1.2. An issue in Safari Reader mode may allow a remote attacker to bypass the Same Origin Policy.
Which versions are affected by CVE-2020-9911?
It affects 3 products.
Products include Apple Ipados, Apple Iphone Os, Apple Safari.
How do I fix CVE-2020-9911?
No fix has been published for CVE-2020-9911 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-9911 being exploited?
There is no known exploitation of CVE-2020-9911 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-2f5h-28fw-gwx2.