Openvpn Openvpn
55 CVEs affecting Openvpn Openvpn. Latest disclosed: 2026-08-14. Critical: 8, High: 22.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2024-27903 | Critical | 9.8 | 2024-07-08 | OpenVPN plug-ins on Windows with OpenVPN 2.6.9 and earlier could be loaded from any directory, which allows an attacker to load an arbitrary plug-in which can… |
CVE-2023-46850 | Critical | 9.8 | 2023-11-11 | 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 r… |
CVE-2022-0547 | Critical | 9.8 | 2022-03-18 | 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 auth… |
CVE-2017-12166 | Critical | 9.8 | 2017-10-04 | OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code ex… |
CVE-2026-13379 | Critical | 9.1 | 2026-07-30 | The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a cr… |
CVE-2025-12106 | Critical | 9.1 | 2025-12-01 | 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-2024-5594 | Critical | 9.1 | 2025-01-06 | 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… |
CVE-2018-7544 | Critical | 9.1 | 2018-03-16 | A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without a passwor… |
CVE-2025-10680 | High | 8.8 | 2025-10-24 | 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… |
CVE-2024-4877 | High | 8.8 | 2025-04-03 | OpenVPN version 2.4.0 through 2.6.10 on Windows allows an external, lesser privileged process to create a named pipe which the OpenVPN GUI component would conn… |
CVE-2023-7235 | High | 8.4 | 2024-02-21 | The OpenVPN GUI installer before version 2.6.9 did not set the proper access control restrictions to the installation directory of OpenVPN binaries when using… |
CVE-2026-13117 | High | 8.1 | 2026-07-30 | An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS sessi… |
CVE-2026-12996 | High | 8.1 | 2026-07-30 | A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or lea… |
CVE-2026-12932 | High | 8.1 | 2026-07-30 | A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial… |
CVE-2024-27459 | High | 7.8 | 2024-07-08 | The interactive service in OpenVPN 2.6.9 and earlier allows an attacker to send data causing a stack overflow which can be used to execute arbitrary code with… |
CVE-2021-3606 | High | 7.8 | 2021-07-02 | OpenVPN before version 2.5.3 on Windows allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file if present, which all… |
CVE-2018-9336 | High | 7.8 | 2018-05-01 | openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malfor… |
CVE-2026-11771 | High | 7.5 | 2026-07-30 | OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potential… |
CVE-2026-13698 | High | 7.5 | 2026-07-06 | A memory leak in OpenVPN version 2.5.0 through 2.5.11, 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers with a valid tls-crypt-v2 clie… |
CVE-2025-13086 | High | 7.5 | 2025-12-03 | 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 d… |