Wednesday 28 April 2021
The impact of this issue announcement is medium. Please act accordingly to rectify the issue, as stated below.
MacOS versions prior to macOS 11.3
What you need to know:
A strain of Mac’s Shlayer threat, which was released last January, has been exploiting the fully patched M1 macOS (CVE-2021-30657), even bypassing File Quarantine, Notarization Requirements, and Gatekeeper.
Actions to be taken:
Users are advised to update to macOS 11.3.