CVE-2025-31217

CVE-2025-31217 is an input validation vulnerability in Apple's WebKit engine, which powers Safari and other applications on Apple platforms. The issue stems from insufficient validation of specially crafted web content. Apple addressed the flaw by improving input validation, preventing the condition that leads to an unexpected crash [1][2][4].

Attack

Vector An attacker can exploit this vulnerability by luring a user to view a maliciously crafted web page (e.g., via a link in email or a compromised website). No other user interaction is required beyond visiting the page, and the attack can be triggered remotely over the network. The vulnerability affects Safari, as well as any application that uses WebKit to render web content on iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.

Impact

Successful exploitation causes Safari (or the affected application) to unexpectedly crash, denying the user access to the browser and potentially disrupting workflows. While the crash itself does not allow code execution or data theft, it can be used as part of a denial-of-service (DoS) attack against the user's browser.

Mitigation

Apple has released patches in Safari 18.5, iOS 18.5 and iPadOS 18.5, iPadOS 17.7.7, macOS Sequoia 15.5, tvOS 18.5, visionOS 2.5, and watchOS 11.5. Users should update their devices to the latest available versions to mitigate the risk. No workarounds have been provided by Apple [1][2][3][4].