CVE-2026-84566 Memory corruption in iOS and iPadOS
A local attacker can corrupt kernel memory or cause system termination in Apple operating systems, requiring a security patch.
- 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-2026-84566?
CVE-2026-84566 is a high-severity memory corruption vulnerability in Apple Ipados, published on 14 Sep 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 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.
Weakness: CWE-119
Which versions are affected by CVE-2026-84566?
It affects 3 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos.
How do I fix CVE-2026-84566?
No fix has been published for CVE-2026-84566 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-84566 being exploited?
There is no known exploitation of CVE-2026-84566 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-rfc2-rvfg-g74x.