Search criteria
40 vulnerabilities found for openvpn_access_server by openvpn
CVE-2023-46850 (GCVE-0-2023-46850)
Vulnerability from nvd – Published: 2023-11-11 00:15 – Updated: 2025-12-16 18:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|||||||
|
|||||||||
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CVE-2023-46849 (GCVE-0-2023-46849)
Vulnerability from nvd – Published: 2023-11-11 00:05 – Updated: 2025-06-11 14:30
VLAI?
Summary
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.
Severity ?
7.5 (High)
CWE
- CWE-369 - Divide By Zero
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|||||||
|
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CVE-2021-4234 (GCVE-0-2021-4234)
Vulnerability from nvd – Published: 2022-07-06 19:10 – Updated: 2024-08-03 17:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-406 - Insufficient Control of Network Message Volume
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.10 and prior version
|
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CVE-2022-33738 (GCVE-0-2022-33738)
Vulnerability from nvd – Published: 2022-07-06 15:10 – Updated: 2024-08-03 08:09
VLAI?
Summary
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
Severity ?
No CVSS data available.
CWE
- CWE-331 - Insufficient Entropy
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
until 2.11
|
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CVE-2022-33737 (GCVE-0-2022-33737)
Vulnerability from nvd – Published: 2022-07-06 15:09 – Updated: 2024-08-03 08:09
VLAI?
Summary
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
Severity ?
No CVSS data available.
CWE
- CWE-708 - Incorrect Ownership Assignment
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
from version 2.10.0 and before 2.11.0
|
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CVE-2021-3824 (GCVE-0-2021-3824)
Vulnerability from nvd – Published: 2021-09-23 14:53 – Updated: 2024-08-03 17:09
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-84 - Improper Neutralization of Encoded URI Schemes in a Web Page
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.9.0 through 2.9.4
|
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CVE-2020-36382 (GCVE-0-2020-36382)
Vulnerability from nvd – Published: 2021-06-04 10:47 – Updated: 2024-08-04 17:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.7.3 to 2.8.7
|
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CVE-2020-15077 (GCVE-0-2020-15077)
Vulnerability from nvd – Published: 2021-06-04 10:42 – Updated: 2024-08-04 13:08
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
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CVE-2020-15074 (GCVE-0-2020-15074)
Vulnerability from nvd – Published: 2020-07-14 17:27 – Updated: 2024-08-04 13:08
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-302 - Authentication Bypass by Assumed-Immutable Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.8.3 and prior versions in addition to 2.9.5
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CVE-2020-11462 (GCVE-0-2020-11462)
Vulnerability from nvd – Published: 2020-05-04 13:45 – Updated: 2024-08-04 11:28
VLAI?
Summary
An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3. With the full featured RPC2 interface enabled, it is possible to achieve a temporary DoS state of the management interface when sending an XML Entity Expansion (XEE) payload to the XMLRPC based RPC2 interface. The duration of the DoS state depends on available memory and CPU speed. The default restricted mode of the RPC2 interface is NOT vulnerable.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2020-8953 (GCVE-0-2020-8953)
Vulnerability from nvd – Published: 2020-02-13 03:13 – Updated: 2024-08-04 10:12
VLAI?
Summary
OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2017-5868 (GCVE-0-2017-5868)
Vulnerability from nvd – Published: 2017-05-25 19:00 – Updated: 2024-08-05 15:11
VLAI?
Summary
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2014-8104 (GCVE-0-2014-8104)
Vulnerability from nvd – Published: 2014-12-03 18:00 – Updated: 2024-08-06 13:10
VLAI?
Summary
OpenVPN 2.x before 2.0.11, 2.1.x, 2.2.x before 2.2.3, and 2.3.x before 2.3.6 allows remote authenticated users to cause a denial of service (server crash) via a small control channel packet.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2014-9104 (GCVE-0-2014-9104)
Vulnerability from nvd – Published: 2014-11-26 15:00 – Updated: 2024-08-06 13:33
VLAI?
Summary
Multiple cross-site request forgery (CSRF) vulnerabilities in the XML-RPC API in the Desktop Client in OpenVPN Access Server 1.5.6 and earlier allow remote attackers to hijack the authentication of administrators for requests that (1) disconnecting established VPN sessions, (2) connect to arbitrary VPN servers, or (3) create VPN profiles and execute arbitrary commands via crafted API requests.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2013-2692 (GCVE-0-2013-2692)
Vulnerability from nvd – Published: 2014-05-13 14:00 – Updated: 2024-08-06 15:44
VLAI?
Summary
Cross-site request forgery (CSRF) vulnerability in the Admin web interface in OpenVPN Access Server before 1.8.5 allows remote attackers to hijack the authentication of administrators for requests that create administrative users.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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CVE-2023-46850 (GCVE-0-2023-46850)
Vulnerability from cvelistv5 – Published: 2023-11-11 00:15 – Updated: 2025-12-16 18:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
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|
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CVE-2023-46849 (GCVE-0-2023-46849)
Vulnerability from cvelistv5 – Published: 2023-11-11 00:05 – Updated: 2025-06-11 14:30
VLAI?
Summary
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.
Severity ?
7.5 (High)
CWE
- CWE-369 - Divide By Zero
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|||||||
|
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CVE-2021-4234 (GCVE-0-2021-4234)
Vulnerability from cvelistv5 – Published: 2022-07-06 19:10 – Updated: 2024-08-03 17:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-406 - Insufficient Control of Network Message Volume
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.10 and prior version
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CVE-2022-33738 (GCVE-0-2022-33738)
Vulnerability from cvelistv5 – Published: 2022-07-06 15:10 – Updated: 2024-08-03 08:09
VLAI?
Summary
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
Severity ?
No CVSS data available.
CWE
- CWE-331 - Insufficient Entropy
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
until 2.11
|
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CVE-2022-33737 (GCVE-0-2022-33737)
Vulnerability from cvelistv5 – Published: 2022-07-06 15:09 – Updated: 2024-08-03 08:09
VLAI?
Summary
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
Severity ?
No CVSS data available.
CWE
- CWE-708 - Incorrect Ownership Assignment
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
from version 2.10.0 and before 2.11.0
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CVE-2021-3824 (GCVE-0-2021-3824)
Vulnerability from cvelistv5 – Published: 2021-09-23 14:53 – Updated: 2024-08-03 17:09
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-84 - Improper Neutralization of Encoded URI Schemes in a Web Page
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.9.0 through 2.9.4
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CVE-2020-36382 (GCVE-0-2020-36382)
Vulnerability from cvelistv5 – Published: 2021-06-04 10:47 – Updated: 2024-08-04 17:23
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
2.7.3 to 2.8.7
|
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CVE-2020-15077 (GCVE-0-2020-15077)
Vulnerability from cvelistv5 – Published: 2021-06-04 10:42 – Updated: 2024-08-04 13:08
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
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CVE-2020-15074 (GCVE-0-2020-15074)
Vulnerability from cvelistv5 – Published: 2020-07-14 17:27 – Updated: 2024-08-04 13:08
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- CWE-302 - Authentication Bypass by Assumed-Immutable Data
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OpenVPN Access Server |
Affected:
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CVE-2020-11462 (GCVE-0-2020-11462)
Vulnerability from cvelistv5 – Published: 2020-05-04 13:45 – Updated: 2024-08-04 11:28
VLAI?
Summary
An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3. With the full featured RPC2 interface enabled, it is possible to achieve a temporary DoS state of the management interface when sending an XML Entity Expansion (XEE) payload to the XMLRPC based RPC2 interface. The duration of the DoS state depends on available memory and CPU speed. The default restricted mode of the RPC2 interface is NOT vulnerable.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2020-8953 (GCVE-0-2020-8953)
Vulnerability from cvelistv5 – Published: 2020-02-13 03:13 – Updated: 2024-08-04 10:12
VLAI?
Summary
OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2017-5868 (GCVE-0-2017-5868)
Vulnerability from cvelistv5 – Published: 2017-05-25 19:00 – Updated: 2024-08-05 15:11
VLAI?
Summary
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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CVE-2014-8104 (GCVE-0-2014-8104)
Vulnerability from cvelistv5 – Published: 2014-12-03 18:00 – Updated: 2024-08-06 13:10
VLAI?
Summary
OpenVPN 2.x before 2.0.11, 2.1.x, 2.2.x before 2.2.3, and 2.3.x before 2.3.6 allows remote authenticated users to cause a denial of service (server crash) via a small control channel packet.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
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CVE-2014-9104 (GCVE-0-2014-9104)
Vulnerability from cvelistv5 – Published: 2014-11-26 15:00 – Updated: 2024-08-06 13:33
VLAI?
Summary
Multiple cross-site request forgery (CSRF) vulnerabilities in the XML-RPC API in the Desktop Client in OpenVPN Access Server 1.5.6 and earlier allow remote attackers to hijack the authentication of administrators for requests that (1) disconnecting established VPN sessions, (2) connect to arbitrary VPN servers, or (3) create VPN profiles and execute arbitrary commands via crafted API requests.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2013-2692 (GCVE-0-2013-2692)
Vulnerability from cvelistv5 – Published: 2014-05-13 14:00 – Updated: 2024-08-06 15:44
VLAI?
Summary
Cross-site request forgery (CSRF) vulnerability in the Admin web interface in OpenVPN Access Server before 1.8.5 allows remote attackers to hijack the authentication of administrators for requests that create administrative users.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
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