CVE-2026-43666
Apple iOS/PadOS/ macOS/tvOS/watchOS VisionOS Out-of-Bounds Write Denial-of-Service
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service.
INFO
Published Date :
May 11, 2026, 9:19 p.m.
Last Modified :
May 11, 2026, 9:19 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-43666
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update iOS and iPadOS to version 18.7.9 or 26.5.
- Update macOS Sequoia to version 15.7.7.
- Update macOS Sonoma to version 14.8.7.
- Update macOS Tahoe, tvOS, visionOS, and watchOS to version 26.5.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43666.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43666 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43666
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-43666 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43666 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
May. 11, 2026
Action Type Old Value New Value Added Description An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service. Added Reference https://support.apple.com/en-us/127110 Added Reference https://support.apple.com/en-us/127111 Added Reference https://support.apple.com/en-us/127115 Added Reference https://support.apple.com/en-us/127116 Added Reference https://support.apple.com/en-us/127117 Added Reference https://support.apple.com/en-us/127118 Added Reference https://support.apple.com/en-us/127119 Added Reference https://support.apple.com/en-us/127120