CVE-2026-86879 Denial of service in iOS and iPadOS
A remote attacker can cause a denial-of-service in iOS and iPadOS due to insufficient input validation, requiring an OS upgrade to fix.
- 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-2026-86879?
CVE-2026-86879 is a medium-severity denial of service 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 denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27. A remote attacker may be able to cause a denial-of-service.
Weakness: CWE-20
Which versions are affected by CVE-2026-86879?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2026-86879?
No fix has been published for CVE-2026-86879 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-86879 being exploited?
There is no known exploitation of CVE-2026-86879 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-h46f-wrjh-pfj6.