# CVE-2026-81830: OpenVPN Windows interactive service path validation bypass

Source: https://junglewise.ai/threats/cve-2026-81830-openvpn-windows-interactive-service-path-validation-bypass  
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-2026-81830 · Severity: info · Published 2026-09-07

OpenVPN's Windows interactive service handles configuration files for VPN connections on Windows systems. A local authenticated user can bypass security restrictions that limit configuration files to a trusted directory, potentially allowing them to load malicious or unauthorized VPN configurations.

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

## Quick answers

**Is CVE-2026-81830 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81830 being exploited in the wild.

**How severe is CVE-2026-81830?** Informational severity, published 7 September 2026.

**Which products and versions are affected?** Openvpn 2.4.0 through 2.6.22.

**Is there a fix for CVE-2026-81830?** 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-2026-81830 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-81830?** 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

The vulnerability is an improper path validation flaw in the Windows interactive service component of OpenVPN. Local authenticated users can bypass the trusted configuration directory constraint through incorrect file path validation logic, allowing them to reference configuration files outside the intended protected directory. Attack requires local authentication and presence on the target system. An attacker could exploit this to load arbitrary VPN configurations, potentially redirecting network traffic or gaining unauthorized access to VPN resources. Affected versions are 2.4.0 through 2.6.22.

## Affected products

- OpenVPN OpenVPN 2.4.0 through 2.6.22

## Timeline

- 2026-09-07: disclosed

## References

- [https://community.openvpn.net/Security%20Announcements/CVE-2026-81830](https://community.openvpn.net/Security%20Announcements/CVE-2026-81830)

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