OpenVPN Inc. maintains a focused portfolio of virtual private network software and access servers that provide remote connectivity and network encryption across enterprise and consumer deployments, making vulnerabilities in these products high-impact despite the narrow product scope. Vulnerabilities affecting the vendor skew toward serious outcomes, with an elevated share reaching critical severity, and reflect the authentication and cryptographic demands intrinsic to VPN implementations—recurring weakness classes include authentication bypasses, assertion failures, and exposure of sensitive information alongside protocol and parsing issues. The exposure concentrates in the core OpenVPN client and server products, as well as the OpenVPN Access Server and kernel-space data-path components, reflecting the layered architecture spanning user-space and kernel implementations. Defenders should treat updates to this vendor's products as high-priority given the network-critical role of VPN appliances and the potential for authentication or encryption weakening; live severity and exploitation figures are shown alongside this summary.
The number and severity of CVEs published that impact products developed by OpenVPN Inc. over time
Of all the CVEs published by OpenVPN Inc. as a CNA, 95.8% affect products that OpenVPN Inc. develops as a vendor.
Of all the CVEs published that affect products developed by OpenVPN Inc., 60.5% are self-published by OpenVPN Inc. as a CNA.
Signals from CVEs in this vendor scope (76 CVEs).
76 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2017-7478HIGH OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2. | May 15, 2017 | 7.5 | 44 | NO | YES |
CVE-2024-1305CRITICAL 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 i | Jul 8, 2024 | 9.8 | 39 | NO | NO |
CVE-2026-9560HIGH Privilege escalation via background service of OpenVPN Connect 3.5.1 through 3.8.1 on macOS allows attackers to execute arbitrary commands with elevated privileges via local IPC ch | May 26, 2026 | 7.8 | 37 | NO | NO |
CVE-2025-10680HIGH 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 | Oct 24, 2025 | 8.8 | 36 | NO | NO |
CVE-2026-13698HIGH 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 client key to potentially | Jul 6, 2026 | 7.5 | 35 | NO | NO |
CVE-2023-46850CRITICAL 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. | Nov 11, 2023 | 9.8 | 34 | NO | NO |
CVE-2025-3110HIGH OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behi | Jul 8, 2026 | 7.5 | 33 | NO | NO |
CVE-2024-27903CRITICAL 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 be used to interact w | Jul 8, 2024 | 9.8 | 33 | NO | NO |
CVE-2017-12166CRITICAL 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 execution. | Oct 4, 2017 | 9.8 | 33 | NO | NO |
CVE-2017-5868MEDIUM CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation | May 26, 2017 | 6.1 | 33 | NO | YES |
Signals from CVEs in this vendor scope (76 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by OpenVPN Inc..
Media articles that mention a CVE ID that affects a product developed by OpenVPN Inc. — matched by CVE ID, not by vendor name.