Filtered by vendor Openvpn
Subscriptions
Total
85 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2005-2534 | 1 Openvpn | 1 Openvpn | 2026-04-16 | N/A |
| 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. | ||||
| CVE-2005-3409 | 1 Openvpn | 2 Openvpn, Openvpn Access Server | 2026-04-16 | N/A |
| 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. | ||||
| CVE-2005-3393 | 1 Openvpn | 2 Openvpn, Openvpn Access Server | 2026-04-16 | N/A |
| 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-2005-2533 | 1 Openvpn | 1 Openvpn | 2026-04-16 | N/A |
| 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. | ||||
| CVE-2006-2229 | 1 Openvpn | 2 Openvpn, Openvpn Access Server | 2026-04-16 | N/A |
| 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. | ||||
| CVE-2025-15497 | 1 Openvpn | 1 Openvpn | 2026-04-15 | N/A |
| Insufficient epoch key slot processing in OpenVPN 2.7_alpha1 through 2.7_rc5 allows remote authenticated users to trigger an assert resulting in a denial of service | ||||
| CVE-2025-10680 | 1 Openvpn | 1 Openvpn | 2026-04-15 | 8.8 High |
| OpenVPN 2.7_alpha1 through 2.7_beta1 on POSIX based platforms allows a remote authenticated server to inject shell commands via DNS variables when --dns-updown is in use | ||||
| CVE-2025-50055 | 1 Openvpn | 2 Openvpn, Openvpn Access Server | 2026-04-15 | 6.4 Medium |
| Cross-site scripting (XSS) vulnerability in the SAML Authentication module in OpenVPN Access Server version 2.14.0 through 2.14.3 allows configured remote SAML Assertion Consumer Service (ACS) endpoint servers to inject arbitrary web script or HTML via the RelayState parameter | ||||
| CVE-2025-13751 | 2 Microsoft, Openvpn | 2 Windows, Openvpn | 2026-01-30 | 5.5 Medium |
| Interactive service agent in OpenVPN version 2.5.0 through 2.6.16 and 2.7_alpha1 through 2.7_rc2 on Windows allows a local authenticated user to connect to the service and trigger an error causing a local denial of service. | ||||
| CVE-2025-13086 | 1 Openvpn | 1 Openvpn | 2026-01-30 | 7.5 High |
| Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client | ||||
| CVE-2025-12106 | 1 Openvpn | 1 Openvpn | 2025-12-30 | 9.1 Critical |
| Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses | ||||
| CVE-2023-46850 | 3 Debian, Fedoraproject, Openvpn | 4 Debian Linux, Fedora, Openvpn and 1 more | 2025-12-16 | 9.8 Critical |
| Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer. | ||||
| CVE-2024-5594 | 1 Openvpn | 1 Openvpn | 2025-11-03 | 9.1 Critical |
| OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker controlling the server can use to inject unexpected arbitrary data ending up in client logs. | ||||
| CVE-2022-0547 | 3 Debian, Fedoraproject, Openvpn | 3 Debian Linux, Fedora, Openvpn | 2025-11-03 | 9.8 Critical |
| OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials. | ||||
| CVE-2025-2704 | 1 Openvpn | 1 Openvpn | 2025-10-23 | 7.5 High |
| OpenVPN version 2.6.1 through 2.6.13 in server mode using TLS-crypt-v2 allows remote attackers to trigger a denial of service by corrupting and replaying network packets in the early handshake phase | ||||
| CVE-2024-13454 | 1 Openvpn | 1 Easy-rsa | 2025-08-22 | 5.3 Medium |
| Weak encryption algorithm in Easy-RSA version 3.0.5 through 3.1.7 allows a local attacker to more easily bruteforce the private CA key when created using OpenSSL 3 | ||||
| CVE-2024-1305 | 1 Openvpn | 1 Tap-windows6 | 2025-08-22 | 9.8 Critical |
| tap-windows6 driver version 9.26 and earlier does not properly check the size data of incomming write operations which an attacker can use to overflow memory buffers, resulting in a bug check and potentially arbitrary code execution in kernel space | ||||
| CVE-2025-50054 | 1 Openvpn | 1 Ovpn-dco-win | 2025-08-21 | 5.5 Medium |
| Buffer overflow in OpenVPN ovpn-dco-win version 1.3.0 and earlier and version 2.5.8 and earlier allows a local user process to send a too large control message buffer to the kernel driver resulting in a system crash | ||||
| CVE-2023-6247 | 1 Openvpn | 1 Openvpn 3 | 2025-08-21 | 6.5 Medium |
| The PKCS#7 parser in OpenVPN 3 Core Library versions through 3.8.3 did not properly validate the parsed data, which would result in the application crashing. | ||||
| CVE-2025-3908 | 2 Linux, Openvpn | 2 Linux Kernel, Openvpn3linux | 2025-06-12 | 6.2 Medium |
| The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arbitrary directory which will change the ownership and permissions of that destination directory. | ||||