OpenVPN 2.7_rc3 -- Released 28 November 2025

The OpenVPN community project team is proud to release OpenVPN 2.7_rc3. This is the third release candidate for the feature release 2.7.0.

Security fixes:

• CVE-2025-13751: Windows/interactive service: fix bug where the interactive service would error-exit in certain error conditions instead of just logging the fact and continuing. After the error-exit, OpenVPN connections will no longer work until the service is restarted (or the system rebooted). This can be triggered by any authenticated local user, and has thus been classified as a "local denial of service" attack.

Important bug fixes since 2.7_rc2:

• Windows/Interactive Service bugfixes: many small bugfixes to registry-related DNS domain handling
• Windows/Interactive Service: harden service pipe handling close a small race condition, and add restrictive ACLs
• more type conversion related warnings have been fixed
• --multihome behaviour regarding egress interface selection has been changed. See Changes.rst and manpage for details.
• cleanup dead code in event handling code (leftover of the multisocket patch set)
• add new feature, --tls-crypt-v2-max-age n. See Changes.rst and manpage for details.
• improve documentation to point out the pitfalls of case-insensitive filesystems and --client-config-dir
• split default gateway query logic in two:
  • for --redirect-gateway functionality, query for the gateway towards the actual IP address of the VPN server connecting to
  • for the "net_gateway" special destination for --route, and the corresponding environment variable, always query for 0.0.0.0 / ::
  (this will only make a difference in certain scenarios using a local proxy, or on a system with multiple interfaces, not using the "default route" for the VPN connection * see github#890)
• upgrade embedded pkcs11-helper vcpkg + pkcs11-uri patch to 1.31
• CMake / autoconf cleanup wrt unused checks, outdated old-Linux checks, Windows oddities
• DCO (primarily Linux): improve handling of bulk notifications from kernel (do not lose notifications, do not crash) (github#900)

For a list of all changes see the git log.

Highlights of 2.7 include:

• Multi-socket support for servers -- Handle multiple addresses/ports/protocols within one server
• Improved Client support for DNS options
  • Client implementations for Linux/BSD/macOS, included with the default install
  • New client implementation for Windows, adding support for features like split DNS and DNSSEC
• Architectural improvements on Windows
  • The block-local flag is now enforced with WFP filters
  • Windows network adapters are now generated on demand
  • Windows automatic service now runs as an unpriviledged user
  • Support for server mode in win-dco driver
  • Note: Support for the wintun driver has been removed. win-dco is now the default, tap-windows6 is the fallback solution for use-cases not covered by win-dco.
• Improved data channel
  • Enforcement of AES-GCM usage limit
  • Epoch data keys and packet format
• Support for new upstream DCO Linux kernel module
  • This release supports the new ovpn DCO Linux kernel module which will be available in future upstream Linux kernel releases. Backports of the new module to current kernels are available via the ovpn-backports project.
• Client-side support for new PUSH_UPDATE control-channel message
  • This allows servers to send updates to options like routing and DNS config without triggering a reconnect.
• PUSH_UPDATE server support (minimal)
  • New management interface commands push-update-broad and push-update-cid to send PUSH_UPDATE option updates.
• TLS 1.3 support with bleeding-edge mbedTLS versions
• Two new environment variables have been introduced to communicate desired default gateway redirection to plugins like Network Manager.
• Support for Epoch data channel on Windows, using the win-dco driver (2.8.0+)
• "Recursive Routing" check is now more granular, and will only drop packets-in-tunnel if destination IP, protocol and port matches with those needed to reach the VPN server.
• COPYING: license details only relevant to our Windows installers have been updated and moved to the openvpn-build repo

For details see Changes.rst

Windows MSI changes since 2.7_rc2:

• Built against OpenSSL 3.6.0
• Included openvpn-gui updated to 11.59.0.0
  • Authorize config before opening the service pipe
  • Remove dependence on pathcch.dll not in Windows 7
• Included win-dco driver updated to 2.8.0

For Community-maintained packages for Linux distributions see OpenVPN Software Repositories. Note that the Fedora Copr repositories have been moved to the @OpenVPN group account and that there are new repositories available on openSUSE Buildservice.

OpenVPN 2.6.17 -- Released 28 November 2025

The OpenVPN community project team is proud to release OpenVPN 2.6.17. This is a bugfix release containing one security fix.

For details see Changes.rst

Security fixes:

• CVE-2025-13751: Windows/interactive service: fix erroneous exit on error that could be used by a local Windows users to achieve a local denial-of-service

Bug fixes:

• Windows/interactive service: improve service pipe robustness against file access races (uuid) and access by unauthorized processes (ACL).
• upgrade bundled build instruction (vcpkg and patch) for pkcs11-helper to 1.31, fixing a parser bug

Windows MSI changes since 2.6.16-I001:

• Built against OpenSSL 3.6.0
• Included openvpn-gui updated to 11.59.0.0
  • Authorize config before opening the service pipe
  • Remove dependence on pathcch.dll not in Windows 7
• Included win-dco driver updated to 2.8.0

For Community-maintained packages for Linux distributions see OpenVPN Software Repositories.

OpenVPN 2.5.9 -- Released 15 February 2023

The OpenVPN community project team is proud to release OpenVPN 2.5.9. This is a small bugfix release.

For details see Changes.rst

Windows MSI changes since 2.5.8:

• Build against OpenSSL 1.1.1t which contains several security fixes.

Full Release History