CVE-2023-40440

—

CVSS 3.1

7.5 high

EPSS

<1%p43

Published

Sep 12, 2023 (Sep 12, 2023)

Modified

Jun 17, 2026

Description

This issue was addressed with improved state management of S/MIME encrypted emails. This issue is fixed in macOS Monterey 12.6.8. A S/MIME encrypted email may be inadvertently sent unencrypted.

Vendors: apple
Products: macos
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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