CVE-2021-1835 Missing authorization in iOS and iPadOS
An attacker with physical access can bypass lock screen restrictions to read notes on iOS and iPadOS 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-2021-1835?
CVE-2021-1835 is a medium-severity missing authorization vulnerability in Apple Ipados, published on 8 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This issue was addressed with improved checks. This issue is fixed in iOS 14.5 and iPadOS 14.5. A person with physical access to an iOS device may be able to access notes from the lock screen.
Weakness: CWE-862
Which versions are affected by CVE-2021-1835?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2021-1835?
No fix has been published for CVE-2021-1835 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-1835 being exploited?
There is no known exploitation of CVE-2021-1835 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-vg73-qc4g-3qvj.