High [CVE-2026-63649] Privilege escalation via arbitrary configuration file loading
This high-severity Red Hat Linux advisory covers CVE-2026-63649.
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Summary
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 This bypass allows the user to load arbitrary configuration files, which could lead to privilege escalation or other system compromise.
This Important vulnerability affects the Windows interactive service of OpenVPN, allowing a local authenticated user to bypass configuration file restrictions and achieve privilege escalation.
This issue is specific to OpenVPN deployments on Microsoft Windows and does not directly impact Red Hat products, which primarily utilize OpenVPN on Linux-based systems. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
Weakness: CWE-22.
- 2.4.0
- 2.6.21
- 2.7.5
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 24 days ago·verify at source
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