VULNERABILITY INTELLIGENCE

CVE-2005-2531

CVSS score5 MEDIUM
EPSS probability1.97%
CISA KEVNot currently listed
Published2005-08-24
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P

Description

OpenVPN before 2.0.1, when running with "verb 0" and without TLS authentication, does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client, which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.

Primary references