CVE-2025-43520 Apple Multiple Products Classic Buffer Overflow
A malicious application can cause system termination or write kernel memory, requiring OS updates to prevent potential privilege escalation.
- Exploited in the wild
- Since 20 Mar 2026
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-43520?
CVE-2025-43520 is a medium-severity memory corruption vulnerability in Apple Ipados, published on 12 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
Weakness: CWE-120
Which versions are affected by CVE-2025-43520?
It affects 6 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos, Apple Visionos, Apple Watchos.
How do I fix CVE-2025-43520?
No fix has been published for CVE-2025-43520 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 Apr 2026.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-43520 being exploited?
Yes. Attackers have exploited CVE-2025-43520 in the wild since at least 20 Mar 2026.
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-c46j-8p94-c85x.