CVE-2026-86870 Memory corruption in iOS and iPadOS
A heap buffer overflow in Apple operating systems allows attackers to cause unexpected app termination by processing a maliciously crafted file.
- 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-2026-86870?
CVE-2026-86870 is a medium-severity memory corruption vulnerability in Apple Ipados, published on 14 Sep 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 heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to unexpected app termination.
Weakness: CWE-122
Which versions are affected by CVE-2026-86870?
It affects 5 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos, Apple Watchos.
How do I fix CVE-2026-86870?
No fix has been published for CVE-2026-86870 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-2026-86870 being exploited?
There is no known exploitation of CVE-2026-86870 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-4hc9-v4r7-pw4j.