CVE-2025-43434 Use after free in Safari
Attackers can cause unexpected Safari crashes by processing maliciously crafted web content due to a use-after-free vulnerability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-43434?
CVE-2025-43434 is a medium-severity use after free vulnerability in Apple Ipados, published on 4 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Weakness: CWE-416
Which versions are affected by CVE-2025-43434?
It affects 5 products.
Products include Apple Ipados, Apple Iphone Os, Apple Safari, Apple Visionos, Apple Watchos.
How do I fix CVE-2025-43434?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-43434 being exploited?
There is no known exploitation of CVE-2025-43434 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 DEBIAN-CVE-2025-43434, GHSA-3x69-vfm2-92j8, UBUNTU-CVE-2025-43434.