{"id":"CVE-2005-3409","aliases":["DEBIAN-CVE-2005-3409","DSA-885-1","EUVD-2005-3408","GHSA-5cc7-3r85-874q","openSUSE-SU-2024:11128-1"],"status":"published","title":"OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02495,"percentile":0.84769,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2005-11-02T00:00:00Z","modified":"2026-10-23T03:47:38Z","fixes":[{"ecosystem":"Debian:12","package":"openvpn","fixed_in":["2.0.5-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openvpn","fixed_in":["2.0.5-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openvpn","fixed_in":["2.0.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openvpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.5-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openvpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.5-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openvpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.5-1"}]}]},{"source":"osv","ecosystem":"Debian:3.1","package":"openvpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0-1sarge2"}]}],"versions":["2.0-1","2.0-1sarge1"],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"openvpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-1.2"}]}],"bundled":10}],"products":[{"vendor":"openvpn","product":"openvpn"},{"vendor":"openvpn","product":"openvpn_access_server"}],"references":[{"url":"http://secunia.com/advisories/17447","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/17480","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://openvpn.net/changelog.html","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.novell.com/linux/security/advisories/2005_25_sr.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","advisory"]},{"url":"http://www.gentoo.org/security/en/glsa/glsa-200511-07.xml","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/15270","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www.securityfocus.com/archive/1/415487","tags":["vendor-advisory","x_refsource_OPENPKG","x_transferred","web"]},{"url":"http://secunia.com/advisories/17452","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://www.osvdb.org/20416","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://www.debian.org/security/2005/dsa-885","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/17376","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2005-3409"},{"url":"https://github.com/advisories/GHSA-5cc7-3r85-874q"},{"url":"https://security-tracker.debian.org/tracker/CVE-2005-3409","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2005-3393","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2005-3409","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2006-1629","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2006-4339","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12166","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7521","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7522","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-9336","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-11810","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-15078","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2005-3409","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.","status":"published","published":"2005-11-02T00:00:00Z","modified":"2024-08-07T23:10:08.881Z","updated_at":"2026-11-02T14:33:38.550354Z"}],"euvd":[{"id":"EUVD-2005-3408","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.","status":"published","published":"2005-11-02T00:00:00Z","modified":"2024-08-07T23:10:08Z","updated_at":"2026-11-03T01:15:27.244831Z"}],"ghsa":[{"id":"GHSA-5cc7-3r85-874q","title":"OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of...","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.","status":"published","published":"2022-05-01T02:17:42Z","modified":"2023-01-30T05:08:09Z","updated_at":"2026-11-02T14:47:48.188889Z"}],"nvd":[{"id":"CVE-2005-3409","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.","status":"published","published":"2005-11-02T00:02:00Z","modified":"2026-06-16T22:16:54.71Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:57.365803Z"}],"osv":[{"id":"CVE-2005-3409","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.","status":"published","published":"2005-11-02T00:02:00Z","modified":"2026-04-10T03:37:18.333063Z","updated_at":"2026-11-02T15:43:56.581247Z"},{"id":"DEBIAN-CVE-2005-3409","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.","status":"published","published":"2005-11-02T00:02:00Z","modified":"2026-10-23T03:47:38.206983229Z","updated_at":"2026-11-02T15:45:22.831407Z"},{"id":"DSA-885-1","title":"openvpn - several","status":"published","published":"2005-11-07T00:00:00Z","modified":"2026-03-09T02:10:32.683356Z","updated_at":"2026-11-02T15:46:18.716547Z"},{"id":"openSUSE-SU-2024:11128-1","title":"openvpn-2.5.3-1.2 on GA media","description":"These are all security issues fixed in the openvpn-2.5.3-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:53:06.953443Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}