CVE-2023-40408 Denial of service in iOS and iPadOS
An inconsistent user interface issue allows Hide My Email to be deactivated unexpectedly, impacting privacy features on Apple devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-40408?
CVE-2023-40408 is a medium-severity denial of service vulnerability in Apple Ipados, published on 25 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An inconsistent user interface issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.1, watchOS 10.1, iOS 16.7.2 and iPadOS 16.7.2, iOS 17.1 and iPadOS 17.1. Hide My Email may be deactivated unexpectedly.
Weakness: CWE-400
Which versions are affected by CVE-2023-40408?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Watchos.
How do I fix CVE-2023-40408?
No fix has been published for CVE-2023-40408 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-40408 being exploited?
There is no known exploitation of CVE-2023-40408 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-8xq6-frf7-63cg.