# CVE-2026-84226: OpenVPN binary planting on Windows

Source: https://junglewise.ai/threats/cve-2026-84226-openvpn-binary-planting-on-windows  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-07. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84226 · Severity: info · Published 2026-09-07

OpenVPN, a widely-used open-source VPN client and server software, contains a local privilege escalation vulnerability on Windows systems. An authenticated local attacker can exploit this flaw during network configuration to plant arbitrary binaries and potentially execute code with elevated privileges, compromising the security of systems running affected OpenVPN versions.

Technologies: [Openvpn](https://junglewise.ai/threats/technologies/openvpn). Vendors: [Openvpn](https://junglewise.ai/threats/vendors/openvpn).

## Quick answers

**Is CVE-2026-84226 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84226 being exploited in the wild.

**How severe is CVE-2026-84226?** Informational severity, published 7 September 2026.

**Which products and versions are affected?** Openvpn 2.5.0 through 2.6.22, 2.7_alpha1 through 2.7.6 (Windows).

**Is there a fix for CVE-2026-84226?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-84226 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-84226?** Check whether you run Openvpn at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is a binary planting / DLL hijacking issue affecting OpenVPN's network configuration routines on Windows. The vulnerability requires local authentication and occurs during network configuration steps, where the application fails to properly validate the source or integrity of binaries loaded from predictable paths. An authenticated local attacker can exploit this to plant malicious binaries in locations where OpenVPN or its network configuration utilities search for dependencies, potentially leading to arbitrary code execution. The flaw affects versions 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6; patched versions are expected to validate binary sources more strictly.

## Affected products

- OpenVPN OpenVPN 2.5.0 through 2.6.22, 2.7_alpha1 through 2.7.6 (Windows)

## Timeline

- 2026-09-07: disclosed

## References

- [https://community.openvpn.net/Security%20Announcements/CVE-2026-84226](https://community.openvpn.net/Security%20Announcements/CVE-2026-84226)

## Related threats

- [OpenVPN use-after-free in TLS session promotion or expiry](https://junglewise.ai/threats/cve-2026-84471-the-fix-for-was-incomplete-a-use-after-free-in-openvpn-2-6-0)
- [OpenVPN integer underflow in domain search options](https://junglewise.ai/threats/cve-2026-88964-an-integer-underflow-in-openvpn-version-2-7-alpha3-through-2-7-7)
- [OpenVPN identity impersonation via embedded NUL in certificate subject](https://junglewise.ai/threats/cve-2026-84790-openvpn-2-7-alpha1-through-2-7-7-allows-remote-authenticated)
- [OpenVPN ACK packet retransmission denial of service](https://junglewise.ai/threats/cve-2026-84732-openvpn-ack-packet-retransmission-denial-of-service)
- [OpenVPN argument parsing vulnerability on Windows](https://junglewise.ai/threats/cve-2026-84256-openvpn-argument-parsing-vulnerability-on-windows)