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Case File

CVE-2009-3767

MEDIUM · CVSS 4.3 EPSS 3.09%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-10-23 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. It affects OpenSSL.

CVE
CVE-2009-3767
Severity
MEDIUM
CVSS
4.3
EPSS
3.09%
OpenSSL

Original NVD Description

libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4, and possibly other versions, 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.