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APPLE-SA-2021-03-26-3 watchOS 7.3.3

watchOS 7.3.3 addresses the following issue. 
Information about the security content is also available at 
https://support.apple.com/HT212258.

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

Installation note:
Instructions on how to update your Apple Watch software are
available at https://support.apple.com/kb/HT204641
To check the version on your Apple Watch, open the Apple Watch app
on your iPhone and select "My Watch > General > About".
Alternatively, on your watch, select "My Watch > General > About".

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222
This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/
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