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Vulnerability record · CVE-2024-27903 · published 8 July 2024

CVE-2024-27903: Openvpn unrestricted file upload vulnerability

Openvpn · Openvpn

OpenVPN plug-ins on Windows with OpenVPN 2.6.9 and earlier could be loaded from any directory, which allows an attacker to load an arbitrary plug-in which can be used to interact with the privileged OpenVPN interactive service.

9.8 CVSS 3.1 Critical EPSS 8.9% · top 4.9% CWE-283 · CWE-283CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score
8.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

OpenVPN plug-ins on Windows with OpenVPN 2.6.9 and earlier could be loaded from any directory, which allows an attacker to load an arbitrary plug-in which can be used to interact with the privileged OpenVPN interactive service.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://community.openvpn.net/openvpn/wiki/CVE-2024-27903 Vendor Advisory
https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/ Vendor Advisory
https://www.mail-archive.com/[email protected]/msg07534.html Mailing List
https://community.openvpn.net/openvpn/wiki/CVE-2024-27903 Vendor Advisory
https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/ Vendor Advisory
https://www.mail-archive.com/[email protected]/msg07534.html Mailing List

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-46850Openvpn use after free vulnerabilityUse after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buff…EPSS 2.0%9.8CVE-2022-0547Openvpn improper authentication vulnerabilityOpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of def…EPSS 3.6%9.8CVE-2017-12166Openvpn out-of-bounds write vulnerabilityOpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting …EPSS 3.6%9.1CVE-2025-12106Openvpn vulnerabilityInsufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addressesEPSS 0.56%9.1CVE-2024-5594Openvpn vulnerabilityOpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker controlling the server can use to inject unexpected arbitrary d…EPSS 0.84%9.1CVE-2018-7544Openvpn vulnerabilityA cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without…EPSS 1.8%9.0CVE-2006-1629Openvpn vulnerabilityOpenVPN 2.0 through 2.0.5 allows remote malicious servers to execute arbitrary code on the client by using setenv with the LD_PRELOAD environment var…EPSS 3.1%8.8CVE-2024-4877Openvpn vulnerabilityOpenVPN version 2.4.0 through 2.6.10 on Windows allows an external, lesser privileged process to create a named pipe which the OpenVPN GUI component …EPSS 0.43%

Source: NIST National Vulnerability Database (record CVE-2024-27903), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.