CVE-2021-30877

Name of the Vulnerable Software and Affected Versions macOS versions prior to 12.0.1 macOS Big Sur versions prior to 11.6.1 Security Update versions prior to 2021-007 Catalina

Description An out-of-bounds read issue was addressed with improved bounds checking. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.

Recommendations For macOS versions prior to 12.0.1, update to macOS Monterey 12.0.1 or later. For macOS Big Sur versions prior to 11.6.1, update to macOS Big Sur 11.6.1 or later. For Security Update versions prior to 2021-007 Catalina, apply Security Update 2021-007 Catalina or later.