CVE-2005-2534

NONECVSS 0.0

0.0

Race condition in OpenVPN before 2.0.1, when --duplicate-cn is not enabled, allows remote attackers to cause a denial of service (server crash) via simultaneous TCP connections from multiple clients that use the same client certificate.

CVSS v3: —
EG Score: —
EPSS: 69.9%
KEV: Not listed

Published

August 24, 2005

Last Modified

April 16, 2026

References (12)

cve@mitrehttp://openvpn.net/changelog.html
cve@mitrehttp://secunia.com/advisories/16463
cve@mitrehttp://secunia.com/advisories/17103
cve@mitrehttp://www.debian.org/security/2005/dsa-851
cve@mitrehttp://www.mandriva.com/security/advisories?name=MDKSA-2005:145
cve@mitrehttp://www.securityfocus.com/bid/14610
af854a3a-2127-422b-91ae-364da2661108http://openvpn.net/changelog.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/16463
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/17103
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2005/dsa-851
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDKSA-2005:145
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/14610

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-21 16:36 UTCOSV refresh
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2005-2534?

CVE-2005-2534 is a none vulnerability published on August 24, 2005. Race condition in OpenVPN before 2.0.1, when --duplicate-cn is not enabled, allows remote attackers to cause a denial of service (server crash) via simultaneous TCP connections from multiple clients that use the same client certificate.

When was CVE-2005-2534 disclosed?

CVE-2005-2534 was first published in the National Vulnerability Database on August 24, 2005, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2005-2534 actively exploited?

CVE-2005-2534 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2005-2534?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2005-2534, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2005-2534

📅 Published

🔄 Last Modified

🔗 References (12)