CVE-2009-3766

mutt_ssl.c in mutt 1.5.16 and other versions before 1.5.19, when OpenSSL is used, does not verify the domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

• CWE-310

• http://dev.mutt.org/trac/ticket/3087Patch, Vendor Advisory
• http://marc.info/?l=oss-security&m=125198917018936&w=2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/10/26/1Mailing List, Third Party Advisory
• http://dev.mutt.org/trac/ticket/3087Patch, Vendor Advisory
• http://marc.info/?l=oss-security&m=125198917018936&w=2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2009/10/26/1Mailing List, Third Party Advisory

Published

Oct 23, 2009

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2009-3768Rejected reason: This candidate is unused by its CNA.
• CVE-2009-3769Rejected reason: This candidate is unused by its CNA.
• CVE-2009-3770Rejected reason: This candidate is unused by its CNA.
• CVE-2009-3771Rejected reason: This candidate is unused by its CNA.
• CVE-2009-3772Rejected reason: This candidate is unused by its CNA.