CVE-2024-40803

A type confusion issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14...

7.5 High

A type confusion issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.7.6, macOS Sonoma 14.6, macOS Ventura 13.6.8. An attacker may be able to cause unexpected app termination.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.22%Up 1.2 points since Jul 30, 2024

What each source reports

NVD Score used 7.5

Record: CVE-2024-40803
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-02

CVE List 7.5

Record: CVE-2024-40803
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-02

EUVDEUVD-2024-38644 7.5

Record: EUVD-2024-38644
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fmmj-2f3w-98j5 7.5

A type confusion issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14...

A type confusion issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14.6, macOS Monterey 12.7.6, macOS Ventura 13.6.8. An attacker may be able to cause unexpected app termination.

Record: GHSA-fmmj-2f3w-98j5
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-02

Affected products

apple macos

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-40803 is a high vulnerability (CVSS 7.5) in Apple Macos, published July 29, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 69th percentile. No source names a fixed version.

References

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