CVE-2025-50054

Buffer overflow in OpenVPN ovpn-dco-win version 1.3.0 and earlier and version 2.5.8 and earlier allows a local user process to send a too large control message buffer to the kernel driver resulting in a system crash
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OpenVPNCNA
---
---
CISA-ADPADP
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
VendorProductVersion
openvpnovpn-dco-win
𝑥
≤ 1.3.0
openvpnovpn-dco-win
2.4.0 ≤
𝑥
≤ 2.5.8
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://community.openvpn.net/Downloads#openvpn-27_alpha2-released-19-june-2025
https://community.openvpn.net/Security%20Announcements/CVE-2025-50054