CVE-2023-40440

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductApple Macos
PublishedSep 12, 2023
First seenSep 12, 2023

How to fix

Update
  • apple macos12.6.8 or later

Affected products

ProductAffected versionsFixed in
apple macos12.0.0 ≤ v < 12.6.812.6.8

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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