CVE-2024-40821

HIGHNVD 7.18.4▲

7.1

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 v3: 7.1
EG Score: 8.4(medium)
EPSS: 11.6%
KEV: Not listed

Published

July 29, 2024

Last Modified

April 2, 2026

References (12)

product-security@applehttps://support.apple.com/en-us/120910
product-security@applehttps://support.apple.com/en-us/120911
product-security@applehttps://support.apple.com/en-us/120912
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2024/Jul/18
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2024/Jul/19
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2024/Jul/20
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT214118
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT214119
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT214120
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT214118
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT214119
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT214120

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-281Improper Preservation of Permissions

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2024-40821?

CVE-2024-40821 is a high vulnerability published on July 29, 2024. 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.

When was CVE-2024-40821 disclosed?

CVE-2024-40821 was first published in the National Vulnerability Database on July 29, 2024, with the most recent update on April 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-40821 actively exploited?

CVE-2024-40821 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-40821?

CVE-2024-40821 has a CVSS v3 base score of 7.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.4.

How do I remediate CVE-2024-40821?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-40821, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-40821

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Is Your Infrastructure Affected by CVE-2024-40821?

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CVE-2024-40821

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-40821?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same CWE)