CVE-2021-1863 Auth bypass in iOS and iPadOS
An attacker with physical access can bypass NFC action authentication to place arbitrary phone calls 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-2021-1863?
CVE-2021-1863 is a low-severity authentication bypass 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
An issue existed with authenticating the action triggered by an NFC tag. The issue was addressed with improved action authentication. 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 place phone calls to any phone number.
Weakness: CWE-287
Which versions are affected by CVE-2021-1863?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2021-1863?
No fix has been published for CVE-2021-1863 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-2021-1863 being exploited?
There is no known exploitation of CVE-2021-1863 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-v8qg-q79m-vp4q.