CVE-2019-8803 Auth bypass in iOS
A local attacker can bypass authentication to access a previously logged-in user's account without valid credentials on Apple 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-2019-8803?
CVE-2019-8803 is a high-severity authentication bypass vulnerability in Apple Ipados, published on 18 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An authentication issue was addressed with improved state management. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1, tvOS 13.2, watchOS 6.1. A local attacker may be able to login to the account of a previously logged in user without valid credentials..
Weakness: CWE-613
Which versions are affected by CVE-2019-8803?
It affects 5 products.
Products include Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos.
How do I fix CVE-2019-8803?
No fix has been published for CVE-2019-8803 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-2019-8803 being exploited?
There is no known exploitation of CVE-2019-8803 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-xv4p-3xwj-7c58.