About the security content of watchOS 7.3.3

This document describes the security content of watchOS 7.3.3.

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watchOS 7.3.3

Released 26 March 2021

WebKit

Available for: Apple Watch Series 3 and later

Impact: Processing maliciously crafted web content may lead to universal cross-site scripting. Apple is aware of a report that this issue may have been actively exploited.

Description: This issue was addressed by improved management of object lifetimes.

CVE-2021-1879: Clement Lecigne of Google Threat Analysis Group and Billy Leonard of Google Threat Analysis Group

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