CVE-2026-43816

What it is

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination.

At a glance

Exploitability

Can be exploited locally on the machine without logging in, but needs a user to act. High risk of service disruption.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-07-27 21:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-07-29 20:37 UTC Last updatedMost recent change to the record

Details

Published

2026-07-27 21:17 UTC

Last modified

2026-07-29 20:37 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-787 · Out-of-bounds write

Record status

Analyzed

Affected

• Apple Ipados < 26.6
• Apple Iphone Os < 26.6
• Apple macOS < 26.6
• Apple Tvos < 26.6
• Apple Visionos < 26.6
• Apple Watchos < 26.6

Attack profile CVSS 3.1 · 5.5

Attack vector

Local

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High