iOS 18.3.2 contains a supplementary fix for an actively exploited vulnerability.
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Tuesday’s iOS 18.3.2 update contains a supplementary security fix, fully patching an actively exploited vulnerability present in older versions of the iPhone operating system.
On Tuesday, following the launch of the third developer beta of iOS 18.4, Apple released iOS 18.3.2. While the update itself is relatively minor, it includes an important security fix related to web browsing.
Specifically, iOS 18.3.2 contains a supplementary fix for a WebKit vulnerability that was believed to have been fully patched with iOS 17.2. According to Apple’s website, the vulnerability meant that attackers were able to use maliciously crafted web content to break out of the iOS Web Content sandbox.
The security issue was reportedly used as part of an extremely sophisticated attack targeting high-profile individuals, particularly those with devices running versions older than iOS 17.2.
The iOS 18.3.2 update fully resolves this WebKit vulnerability, as Apple fixed an out-of-bounds write issue through the addition of improved security checks that prevent unauthorized actions. The security issue was also patched on Mac via macOS Sequoia 15.3.2 and Safari 18.3.1 for macOS Ventura. The Apple Vision Pro received the same fix with the visionOS 2.3.2 update.
It’s important to always keep your operating system up-to-date. Apple’s latest security fixes ensure that bad actors have a much more difficult time obtaining your private user data, on some occasions even patching actively used exploits, as was the case with the iOS 18.3.2 update.
