CVE-2024-40821highCWE-281

CVE-2024-40821: high-severity vulnerability in Apple macOS

Published 29 Jul 2024 · Updated 02 Apr 2026

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.4epss 0.2%

An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Monterey 12.7.6, macOS Sonoma 14.6, macOS Ventura 13.6.8. Third party app extensions may not receive the correct sandbox restrictions.

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

Affected products

Apple · macOS

Related CVEs — Apple macOS

In the same product, most dangerous first.

CVE-2021-30860HIGHCVE-2021-30860EPSS 76.0%KEV CVE-2021-30657MEDIUMCVE-2021-30657EPSS 68.5%KEV CVE-2025-43300CRITICALCVE-2025-43300EPSS 65.2%KEV CVE-2023-41064HIGHCVE-2023-41064EPSS 53.4%KEV CVE-2023-32434HIGHCVE-2023-32434EPSS 51.5%KEV CVE-2021-30807HIGHCVE-2021-30807EPSS 28.8%KEV

References

http://seclists.org/fulldisclosure/2024/Jul/18 http://seclists.org/fulldisclosure/2024/Jul/19 http://seclists.org/fulldisclosure/2024/Jul/20 https://support.apple.com/en-us/120910 https://support.apple.com/en-us/120911 https://support.apple.com/en-us/120912 https://support.apple.com/en-us/HT214118 https://support.apple.com/en-us/HT214119 https://support.apple.com/en-us/HT214120 https://support.apple.com/kb/HT214118 https://support.apple.com/kb/HT214119 https://support.apple.com/kb/HT214120