CVE-2025-43214

Root

Cause CVE-2025-43214 is a denial-of-service vulnerability affecting Apple's Safari browser across multiple platforms. The issue stems from improper memory handling, which can be triggered when processing maliciously crafted web content. This type of flaw could allow an attacker to cause the browser to terminate unexpectedly, impacting availability.

Attack

Vector To exploit this vulnerability, an attacker would need to convince a user to visit a specially crafted web page. No additional authentication or complex preconditions are required beyond standard web browsing. The vulnerability has been confirmed in Safari on macOS Sequoia, iOS/iPadOS, tvOS, visionOS, and watchOS, based on the security advisories published by Apple [1][2][3][4].

Impact

Successful exploitation results in an unexpected Safari crash, leading to a denial-of-service condition for the user. The impact is limited to browser termination; there is no indication of code execution or data exfiltration. Apple's advisories consistently describe the impact as 'processing maliciously crafted web content may lead to an unexpected Safari crash'.

Mitigation

Apple has addressed this issue with improved memory handling in the following updates: Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, and watchOS 11.6, all released on July 29, 2025 [1][2][3][4]. Users are advised to apply these updates through their device's software update mechanism. No workarounds have been published.