CVE-2005-2532

OpenVPN before 2.0.1 does not properly flush the OpenSSL error queue when a packet can not be...

5.0 MediumFix available

OpenVPN before 2.0.1 does not properly flush the OpenSSL error queue when a packet can not be decrypted by the server, which allows remote authenticated attackers to cause a denial of service (client disconnection) via a large number of packets that can not be decrypted.

Exploit likelihood

2.74%Up 1.4 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2005-2532
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-2532
Updated: 2026-11-02

EUVDEUVD-2005-2533 No score

Record: EUVD-2005-2533
Updated: 2026-11-03

GitHub AdvisoriesGHSA-86x4-whvc-8cfg No score

OpenVPN before 2.0.1 does not properly flush the OpenSSL error queue when a packet can not be...

Record: GHSA-86x4-whvc-8cfg
Updated: 2026-11-02

OSV No score

Record: CVE-2005-2532
Updated: 2026-11-02

OSVDEBIAN-CVE-2005-2532 No score

Record: DEBIAN-CVE-2005-2532
Updated: 2026-11-02

Affected products

openvpn

Affected packages

Affected packages
Package	Affected	Fixed
`openvpn` Debian:12	before 2.0.2-1	2.0.2-1
`openvpn` Debian:13	before 2.0.2-1	2.0.2-1
`openvpn` Debian:14	before 2.0.2-1	2.0.2-1
`openvpn` Debian:3.1	before 2.0-1sarge1, plus listed versions 2.0-1	2.0-1sarge1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-2532 is a medium vulnerability (CVSS 5.0) in Openvpn, published August 24, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.74%, the 86th percentile. Fixed in openvpn 2.0.2-1.