Openvpn: >> Openvpn Access Server Security Vulnerabilities
OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy
CVSS Score
6.9
EPSS Score
0.003
Published
2026-07-08
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.
CVSS Score
7.5
EPSS Score
0.012
Published
2023-11-11
Use 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 buffers to a remote peer.
CVSS Score
9.8
EPSS Score
0.02
Published
2023-11-11
OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.
CVSS Score
7.5
EPSS Score
0.009
Published
2022-07-06
The OpenVPN Access Server installer creates a log file readable for everyone, which from version 2.10.0 and before 2.11.0 may contain a random generated admin password
CVSS Score
7.5
EPSS Score
0.008
Published
2022-07-06
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
CVSS Score
7.5
EPSS Score
0.009
Published
2022-07-06
OpenVPN Access Server 2.9.0 through 2.9.4 allow remote attackers to inject arbitrary web script or HTML via the web login page URL.
CVSS Score
6.1
EPSS Score
0.007
Published
2021-09-23
OpenVPN Access Server 2.8.7 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.
CVSS Score
5.3
EPSS Score
0.012
Published
2021-06-04
OpenVPN Access Server 2.7.3 to 2.8.7 allows remote attackers to trigger an assert during the user authentication phase via incorrect authentication token data in an early phase of the user authentication resulting in a denial of service.
CVSS Score
7.5
EPSS Score
0.019
Published
2021-06-04
OpenVPN Access Server older than version 2.8.4 and version 2.9.5 generates new user authentication tokens instead of reusing exiting tokens on reconnect making it possible to circumvent the initial token expiry timestamp.
CVSS Score
7.5
EPSS Score
0.01
Published
2020-07-14
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