Summaryinfo

A vulnerability, which was classified as critical, has been found in Apple watchOS. Affected by this issue is some unknown functionality of the component Web Handler. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2025-43213. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple watchOS (affected version unknown). It has been classified as critical. This affects an unknown functionality of the component Web Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.6, iOS 18.6 and iPadOS 18.6, tvOS 18.6, watchOS 11.6, visionOS 2.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2025-43213 since 04/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 304374 (SUSE SLES12 Security Update : webkit2gtk3 (SUSE-SU-2026:1139-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (304374). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Smartwatch Operating System

Vendor

• Apple

Name

• watchOS

License

• commercial

Website

• Vendor: https://www.apple.com/

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