CVE-2021-30879

7.1 highEPSS 0.9%

High (7.1) in apple. EPSS 0.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2021-08-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apple:mac_os_x
apple:macos

References

https://support.apple.com/en-us/HT212869
https://support.apple.com/en-us/HT212871
https://support.apple.com/en-us/HT212872
https://support.apple.com/en-us/HT212869
https://support.apple.com/en-us/HT212871

Check your stack JSON