CVE-2020-3828 Auth bypass in iOS
An attacker with physical access can bypass the lock screen to read contacts on iOS devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3828?
CVE-2020-3828 is a low-severity authentication bypass 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
A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1. A person with physical access to an iOS device may be able to access contacts from the lock screen.
Which versions are affected by CVE-2020-3828?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2020-3828?
No fix has been published for CVE-2020-3828 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-3828 being exploited?
There is no known exploitation of CVE-2020-3828 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-mrvq-4vr3-5c8f.