What’s Vulnerable › Vulnerabilities

CVE-2005-3402

• Severity: low (CVSS 2.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2005-11-01 · updated 2026-06-16

Description

The SMTP client in Mozilla Thunderbird 1.0.5 BETA, 1.0.7, and possibly other versions, does not notify users when it cannot establish a secure channel with the server, which allows remote attackers to obtain authentication information without detection via a man-in-the-middle (MITM) attack that bypasses TLS authentication or downgrades CRAM-MD5 authentication to plain authentication.

Affected products

• Mozilla Thunderbird: 1.0.5-beta, 1.0.7

References

• http://marc.info/?l=bugtraq&m=113028017608146&w=2
• http://marc.info/?l=bugtraq&m=113034421329653&w=2
• http://www.securityfocus.com/bid/15106
• https://bugzilla.mozilla.org/show_bug.cgi?id=311657
• http://marc.info/?l=bugtraq&m=113028017608146&w=2
• http://marc.info/?l=bugtraq&m=113034421329653&w=2
• http://www.securityfocus.com/bid/15106
• https://bugzilla.mozilla.org/show_bug.cgi?id=311657

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