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Unrated severityNVD Advisory· Published Oct 23, 2009· Updated Jun 16, 2026

CVE-2009-3765

CVE-2009-3765

Description

mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

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Affected products

3
  • Mutt/Mutt3 versions
    cpe:2.3:a:mutt:mutt:1.5.19:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:mutt:mutt:1.5.19:*:*:*:*:*:*:*
    • cpe:2.3:a:mutt:mutt:1.5.20:*:*:*:*:*:*:*
    • (no CPE)range: = 1.5.19, = 1.5.20

Patches

Vulnerability mechanics

References

4

News mentions

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