CVE-2025-43213

Root

Cause

CVE-2025-43213 is a vulnerability in WebKit, the browser engine underlying Safari, that results in an unexpected Safari crash when processing maliciously crafted web content. The official description states the issue was addressed with improved memory handling, suggesting a memory corruption flaw during parsing of certain content [1][2].

Exploitation

The attack vector is through maliciously crafted web content, which could be hosted on a website or delivered via email, message, or other means that opens the content in Safari. No specific user interaction beyond viewing the content is required, and no additional permissions or network position are mentioned in the advisories.

Impact

Successful exploitation leads to a denial-of-service condition: Safari terminates unexpectedly. The crash could disrupt browsing sessions, potentially causing loss of unsaved data [1][2]. The vulnerability does not appear to allow arbitrary code execution based on available information.

Mitigation

Apple has released patches for the vulnerability in the following OS versions: macOS Sequoia 15.6, iOS 18.6, iPadOS 18.6, tvOS 18.6, visionOS 2.6, and watchOS 11.6 [1][2][4]. Users should update their devices to the latest software versions to remediate the issue.