Released: October 25, 2021 Available for: Apple Watch Series 3 and later Key Vulnerabilities: 1. Audio - Impact: A malicious application may be able to elevate privileges. - CVE-2021-30907: _Zweig of Kunlun Lab_ 2. ColorSync - Impact: Processing a maliciously crafted image may lead to arbitrary code execution. - CVE-2021-30917: _Alexandru-Vlad Niculae and Mateusz Jurczyk of Google Project Zero_ 3. Kernel - Impact: An application may be able to execute arbitrary code with kernel privileges. - CVE-2021-30886: _@0xalsr_ 4. WebKit - Impact: Processing maliciously crafted web content may lead to code execution. - CVE-2021-31008: _an anonymous researcher_ 5. IO MobileFrameBuffer - Impact: An application may be able to execute arbitrary code with kernel privileges. - CVE-2021-30883: _an anonymous researcher_ 6. CoreAudio - Impact: Processing a maliciously crafted file may disclose user information. - CVE-2021-30905: _Mickey Jin (@patch1t) of Trend Micro_ Additional information and acknowledgments can be referenced for researchers and contributors.