CVE-2021-3606 json
OpenVPN before version 2.5.3 on Windows allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file i…
published 2021-07-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26910
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
OpenVPN before version 2.5.3 on Windows allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file if present, which allows the user to run arbitrary code with the same privilege level as the main OpenVPN process (openvpn.exe).
Patch / fix
- openvpn openvpn 2.5.3
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- n/a OpenVPN-GUI
Classification
- Weakness
-
- CWE-427 Uncontrolled Search Path Element
References
-
community.openvpn.net
/openvpn/wiki/SecurityAnnouncements
vendor-advisory
-
community.openvpn.net
/openvpn/wiki/CVE-2021-3606
vendor-advisory
Sources
- CVE List CVE-2021-3606
- NVD CVE-2021-3606
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.