CVE-2026-63649

Severity: medium (CVSS 4.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-09-01
Weakness: CWE-183

Description

The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks

Affected products

OpenVPN: from 2.4.0 before 2.6.22; from 2.7_alpha1 before 2.7.6 — fixed in 2.6.22, 2.7.6

How to fix

Upgrade to a fixed version: OpenVPN 2.6.22, 2.7.6. Check the vendor advisory for mitigations.

References

https://community.openvpn.net/ReleaseHistory#openvpn-2622-released-5-august-2026
https://community.openvpn.net/ReleaseHistory#openvpn-276-released-5-august-2026
https://community.openvpn.net/Security%20Announcements/CVE-2026-63649

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