CVE-2019-8718 Memory corruption in iOS

High 7.8 Published 27 Oct 2020 Updated 4 Aug 2024

An attacker can execute arbitrary code with kernel privileges on Apple devices via a memory corruption flaw, requiring OS updates.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-8718?

CVE-2019-8718 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 27 Oct 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 6, iOS 13, tvOS 13. An application may be able to execute arbitrary code with kernel privileges.

Weakness: CWE-787

Which versions are affected by CVE-2019-8718?

It affects 3 products.

Products include Apple Iphone Os, Apple Tvos, Apple Watchos.

How do I fix CVE-2019-8718?

No fix has been published for CVE-2019-8718 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-2019-8718 being exploited?

There is no known exploitation of CVE-2019-8718 in the wild and no public exploit code.

All Apple Iphone Os vulnerabilities

Sources

Also known as GHSA-9255-vgmq-p4qw.