CVE-2026-43704 Use after free in Safari
A malicious web extension can trigger a use-after-free vulnerability in Safari, causing an unexpected process crash.
- 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
- None listed
What is CVE-2026-43704?
CVE-2026-43704 is a medium-severity use after free vulnerability in Apple Ipados, published on 29 Jun 2026. 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 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious web extension may be able to cause an unexpected process crash.
Weakness: CWE-416
Which versions are affected by CVE-2026-43704?
It affects 4 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Safari.
How do I fix CVE-2026-43704?
No fix has been published for CVE-2026-43704 yet. Limit exposure of the affected software until one is available.
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-2026-43704 being exploited?
There is no known exploitation of CVE-2026-43704 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-9xg4-m7cw-j39m.