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Case File

CVE-2009-3942

MEDIUM · CVSS 6.4 EPSS 1.08%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-11-16 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2009-3942
Severity
MEDIUM
CVSS
6.4
EPSS
1.08%
OpenSSL

Original NVD Description

Martin Lambers msmtp before 1.4.19, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the (1) subject's Common Name or (2) Subject Alternative Name 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.