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… (CVE-2026-63649)
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
AI Analysis
Technical Summary
The Windows interactive service in OpenVPN versions 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 contains a vulnerability (CVE-2026-63649) that permits local authenticated users to bypass restrictions on the trusted configuration directory. By exploiting this flaw, attackers can load arbitrary configuration files via specially crafted options that bypass whitelist validations. This vulnerability is categorized under CWE-183 (Incorrect Regular Expression).
Potential Impact
Local authenticated users can bypass the trusted configuration directory constraint, potentially allowing them to load arbitrary configuration files. This could lead to unauthorized configuration changes within the OpenVPN service on Windows systems. There is no indication of remote exploitation or impact beyond local privilege constraints. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local authenticated user access to systems running affected OpenVPN versions and monitor for unauthorized configuration changes.
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… (CVE-2026-63649)
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
CVSS v4.0
Affected software
pkg:github/openvpn/openvpnRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Windows interactive service in OpenVPN versions 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 contains a vulnerability (CVE-2026-63649) that permits local authenticated users to bypass restrictions on the trusted configuration directory. By exploiting this flaw, attackers can load arbitrary configuration files via specially crafted options that bypass whitelist validations. This vulnerability is categorized under CWE-183 (Incorrect Regular Expression).
Potential Impact
Local authenticated users can bypass the trusted configuration directory constraint, potentially allowing them to load arbitrary configuration files. This could lead to unauthorized configuration changes within the OpenVPN service on Windows systems. There is no indication of remote exploitation or impact beyond local privilege constraints. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local authenticated user access to systems running affected OpenVPN versions and monitor for unauthorized configuration changes.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p428-592p-6c59
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-63649"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
Threat ID: 6a7ff5e6bf8831d53987df77
Added to database: 08/15/2026, 05:15:18 UTC
Last enriched: 08/15/2026, 06:13:58 UTC
Last updated: 08/16/2026, 00:41:15 UTC
Views: 7
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