VulnerabilityModified
CVE-2023-40440
This issue was addressed with improved state management of S/MIME encrypted emails.
HIGH 7.5EPSS 0.53%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Affected
- apple/macos
- Source
- product-security@apple.com
References
- https://blog.aegrel.ee/apple-mail-smime.html
- https://support.apple.com/en-us/HT213844Release Notes, Vendor Advisory
- https://blog.aegrel.ee/apple-mail-smime.html
- https://support.apple.com/en-us/HT213844Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.