Openvpn

openvpn

Vendor: Openvpn • 50 CVEs

CVEs (50)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2013-2061 2Opensuse Openvpn 3Opensuse OpenvpnOpenvpn Access Server Apr 29, 2026 Nov 18, 2013 N/A· v4 N/A· v3 2.6 LOW· v2 The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does...Show more The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.Show less
CVE-2008-3459 1Openvpn 1Openvpn Apr 23, 2026 Aug 4, 2008 N/A· v4 N/A· v3 7.6 HIGH· v2 Unspecified vulnerability in OpenVPN 2.1-beta14 through 2.1-rc8, when running on non-Windows systems, allows remote servers to execute arbitrary commands via crafted (1) lladdr and (2) iproute configuration directives, p...Show more Unspecified vulnerability in OpenVPN 2.1-beta14 through 2.1-rc8, when running on non-Windows systems, allows remote servers to execute arbitrary commands via crafted (1) lladdr and (2) iproute configuration directives, probably related to shell metacharacters.Show less
CVE-2006-2229 1Openvpn 2Openvpn Openvpn Access Server Apr 16, 2026 May 5, 2006 N/A· v4 N/A· v3 4.0 MEDIUM· v2 OpenVPN 2.0.7 and earlier, when configured to use the --management option with an IP that is not 127.0.0.1, uses a cleartext password for TCP sessions to the management interface, which might allow remote attackers to vi...Show more OpenVPN 2.0.7 and earlier, when configured to use the --management option with an IP that is not 127.0.0.1, uses a cleartext password for TCP sessions to the management interface, which might allow remote attackers to view sensitive information or cause a denial of service.Show less
CVE-2006-1629 1Openvpn 2Openvpn Openvpn Access Server Apr 16, 2026 Apr 6, 2006 N/A· v4 N/A· v3 9.0 HIGH· v2 OpenVPN 2.0 through 2.0.5 allows remote malicious servers to execute arbitrary code on the client by using setenv with the LD_PRELOAD environment variable.
CVE-2005-3409 1Openvpn 2Openvpn Openvpn Access Server Apr 16, 2026 Nov 2, 2005 N/A· v4 N/A· v3 5.0 MEDIUM· v2 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 dereferen...Show more 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.Show less
CVE-2005-3393 1Openvpn 2Openvpn Openvpn Access Server Apr 16, 2026 Nov 1, 2005 N/A· v4 N/A· v3 7.5 HIGH· v2 Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x allows remote clients to execute arbitrary code via format string specifiers in a push of the dhcp-option command option.
CVE-2005-2534 1Openvpn 1Openvpn Apr 16, 2026 Aug 24, 2005 N/A· v4 N/A· v3 2.6 LOW· v2 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 cli...Show more 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.Show less
CVE-2005-2533 1Openvpn 1Openvpn Apr 16, 2026 Aug 24, 2005 N/A· v4 N/A· v3 2.1 LOW· v2 OpenVPN before 2.0.1, when running in "dev tap" Ethernet bridging mode, allows remote authenticated clients to cause a denial of service (memory exhaustion) via a flood of packets with a large number of spoofed MAC addre...Show more OpenVPN before 2.0.1, when running in "dev tap" Ethernet bridging mode, allows remote authenticated clients to cause a denial of service (memory exhaustion) via a flood of packets with a large number of spoofed MAC addresses.Show less
CVE-2005-2532 1Openvpn 1Openvpn Apr 16, 2026 Aug 24, 2005 N/A· v4 N/A· v3 5.0 MEDIUM· v2 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...Show more 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.Show less
CVE-2005-2531 1Openvpn 1Openvpn Apr 16, 2026 Aug 24, 2005 N/A· v4 N/A· v3 5.0 MEDIUM· v2 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 pro...Show more 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.Show less

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