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Mutt does not verify that the smtps server hostname matches the domain name of the subject of an X.509 certificate, which allows man-in-the-middle attackers to spoof an SSL SMTP server via an arbitrary certificate, a different vulnerability than CVE-2009-3766.

🗓️ 02 Oct 2025 06:10:51Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 2 Views

Mutt does not verify SMTP server certificate hostname, enabling man-in-the-middle via arbitrary certificate.

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02 Oct 2025 06:10Current
7High risk
Vulners AI Score7
CVSS 26.8
EPSS0.00396
2