CVE-2023-40394 Information disclosure in iOS and iPadOS
An app can access sensitive user data due to insufficient validation of environment variables in iOS and iPadOS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-40394?
CVE-2023-40394 is a low-severity vulnerability in Apple Ipados, published on 10 Jan 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The issue was addressed with improved validation of environment variables. This issue is fixed in iOS 16.6 and iPadOS 16.6. An app may be able to access sensitive user data.
Weakness: CWE-20
Which versions are affected by CVE-2023-40394?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2023-40394?
No fix has been published for CVE-2023-40394 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-40394 being exploited?
There is no known exploitation of CVE-2023-40394 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-hc28-6r9f-vx7v.