High severity7.1NVD Advisory· Published Aug 24, 2021· Updated Jun 17, 2026
CVE-2021-30877
CVE-2021-30877
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4- Range: = 11.6.1
- Range: = 2021-007
- Range: = 12.0.1
- Range: unspecified
Patches
Vulnerability mechanics
References
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