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CVE-2025-50054

Good to know:

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Date: June 20, 2025

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

Severity Score

Related Resources (4)

https://community.openvpn.net/Downloads#openvpn-27_alpha2-released-19-june-2025
https://community.openvpn.net/Security%20Announcements/CVE-2025-50054
https://nvd.nist.gov/vuln/detail/CVE-2025-50054
https://www.mend.io/vulnerability-database/CVE-2025-50054

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Heap-based Buffer Overflow

CWE-122

Top Fix

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Upgrade Version

Upgrade to version https://github.com/OpenVPN/ovpn-dco-win.git - 2.5.9;https://github.com/OpenVPN/ovpn-dco-win.git - 1.3.1

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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