CVE-2026-43653 Denial of service in iOS and iPadOS
A local network attacker can cause a denial-of-service condition in Apple operating systems due to improper memory handling.
- 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-2026-43653?
CVE-2026-43653 is a medium-severity denial of service vulnerability in Apple Ipados, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.
Weakness: CWE-400
Which versions are affected by CVE-2026-43653?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos.
How do I fix CVE-2026-43653?
No fix has been published for CVE-2026-43653 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-2026-43653 being exploited?
There is no known exploitation of CVE-2026-43653 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-mp3c-q886-fvqv.