CVE-2021-30877

HIGH

macOS - Memory Corruption

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212869
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212871
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212872

Scores

CVSS v3 7.1
EPSS 0.0024
EPSS Percentile 47.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Details

CWE
CWE-125
Status published
Products (3)
apple/mac_os_x 10.15.7 (12 CPE variants)
apple/mac_os_x 10.15 - 10.15.6
apple/macos 11.0 - 11.6.1
Published Aug 24, 2021
Tracked Since Feb 18, 2026