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Case File

CVE-2009-4565

HIGH · CVSS 7.5 EPSS 2.37%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2010-01-04 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable.

CVE
CVE-2009-4565
Severity
HIGH
CVSS
7.5
EPSS
2.37%

Original NVD Description

sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.