The Cybersecurity and Infrastructure Security Agency (CISA) has published a warning regarding an actively exploited zero-day vulnerability in Apple's WebKit browser engine, identified as CVE-2025-24201. The vulnerability, an out-of-bounds write bug, may enable attackers to run malicious code on affected devices without authorization, potentially resulting in remote code execution or the installation of spyware. The vulnerability impacts a broad range of Apple products, such as iPhones, iPads, Macs, and the Apple Vision Pro, in addition to third-party browsers on iOS and iPadOS that use WebKit. The vulnerability can be used through maliciously constructed web content, allowing attackers to escape the Web Content sandbox. Apple has announced that CVE-2025-24201 could already have been exploited in very targeted attacks against certain individuals with iOS versions before 17.2. These attacks seem sophisticated and targeted, as opposed to widespread. Due to this, Apple has released critical updates to patch the vulnerability on several platforms, such as iOS 18.3.2, iPadOS 18.3.2, macOS Sequoia 15.3.2, and Safari 18.3.1. CISA recommends users to install the newest patches and implement vendor guidance to reduce the likelihood of exploitation. To safeguard against possible attacks, users should promptly update their devices, refrain from clicking on suspicious links, and keep an eye out for any suspicious device activity. For corporate environments, installing Mobile Device Management (MDM) solutions and activating Lockdown Mode for high-risk users can also help fortify device security. Apple's release of security patches is meant to seal the vulnerability, but active monitoring and timely updates are still essential in preventing exploitation.
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