What’s Vulnerable › Vulnerabilities

CVE-2005-3409

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2005-11-02 · updated 2026-06-16

Description

OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of service (segmentation fault) by forcing the accept function call to return an error status, which leads to a null dereference in an exception handler.

Affected products

• OpenVPN: 2.0, 2.0.1_rc1, 2.0.1_rc2, 2.0.1_rc3, 2.0.1_rc4, 2.0.1_rc5 (+70)
• OpenVPN Access Server: 2.0.1, 2.0.2

References

• http://openvpn.net/changelog.html
• http://secunia.com/advisories/17376
• http://secunia.com/advisories/17447
• http://secunia.com/advisories/17452
• http://secunia.com/advisories/17480
• http://www.debian.org/security/2005/dsa-885
• http://www.gentoo.org/security/en/glsa/glsa-200511-07.xml
• http://www.novell.com/linux/security/advisories/2005_25_sr.html
• http://www.osvdb.org/20416
• http://www.securityfocus.com/archive/1/415487
• http://www.securityfocus.com/bid/15270
• http://openvpn.net/changelog.html

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