Vulnerability Database

308,926

Total vulnerabilities in the database

CVE-2023-40440

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.

  • Published: Sep 12, 2023
  • Updated: Nov 16, 2025
  • CVE: CVE-2023-40440
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

No CWE or OWASP classifications available.

Software From Fixed in
apple / macos 12.0.0 12.6.8