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    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: 2026-06-23 21:24
    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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    OpenVPN OpenVPN 2 (Community) Affected: 2.6.0 , ≤ 2.6.6 (minor release)
    Create a notification for this product.
    OpenVPN Access Server Affected: 2.11.0 , ≤ 2.11.3 (patch release)
    Affected: 2.12.0 , ≤ 2.12.2 (patch release)
    Create a notification for this product.
    Show details on NVD website

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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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    OpenVPN OpenVPN 2 (Community) Affected: 2.6.0 , ≤ 2.6.6 (minor release)
    Create a notification for this product.
    OpenVPN Access Server Affected: 2.11.0 , ≤ 2.11.3 (patch release)
    Affected: 2.12.0 , ≤ 2.12.1 (patch release)
    Create a notification for this product.
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.10 and prior version
    Show details on NVD website

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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
    Assigner
    References
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: until 2.11
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: from version 2.10.0 and before 2.11.0
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.9.0 through 2.9.4
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.7.3 to 2.8.7
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.8.7 and earlier versions
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.8.3 and prior versions in addition to 2.9.5
    Show details on NVD website

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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
    Show details on NVD website

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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
    https://openvpn.net/security-advisories/ x_refsource_CONFIRM
    Show details on NVD website

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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
    Date Public
    2017-05-05 00:00
    Show details on NVD website

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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
    http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
    http://advisories.mageia.org/MGASA-2014-0512.html x_refsource_CONFIRM
    http://www.ubuntu.com/usn/USN-2430-1 vendor-advisoryx_refsource_UBUNTU
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    https://community.openvpn.net/openvpn/wiki/Securi… x_refsource_CONFIRM
    http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
    Date Public
    2014-12-01 00:00
    Show details on NVD website

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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
    Date Public
    2014-07-01 00:00
    Show details on NVD website

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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
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    http://osvdb.org/93111 vdb-entryx_refsource_OSVDB
    http://openvpn.net/index.php/access-server/downlo… x_refsource_CONFIRM
    Date Public
    2013-05-08 00:00
    Show details on NVD website

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    CVE-2023-46850 (GCVE-0-2023-46850)

    Vulnerability from cvelistv5 – Published: 2023-11-11 00:15 – Updated: 2026-06-23 21:24
    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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    OpenVPN OpenVPN 2 (Community) Affected: 2.6.0 , ≤ 2.6.6 (minor release)
    Create a notification for this product.
    OpenVPN Access Server Affected: 2.11.0 , ≤ 2.11.3 (patch release)
    Affected: 2.12.0 , ≤ 2.12.2 (patch release)
    Create a notification for this product.
    Show details on NVD website

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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.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    OpenVPN OpenVPN 2 (Community) Affected: 2.6.0 , ≤ 2.6.6 (minor release)
    Create a notification for this product.
    OpenVPN Access Server Affected: 2.11.0 , ≤ 2.11.3 (patch release)
    Affected: 2.12.0 , ≤ 2.12.1 (patch release)
    Create a notification for this product.
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.10 and prior version
    Show details on NVD website

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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
    Assigner
    References
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: until 2.11
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: from version 2.10.0 and before 2.11.0
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.9.0 through 2.9.4
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.7.3 to 2.8.7
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.8.7 and earlier versions
    Show details on NVD website

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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
    Impacted products
    Vendor Product Version
    n/a OpenVPN Access Server Affected: 2.8.3 and prior versions in addition to 2.9.5
    Show details on NVD website

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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
    Show details on NVD website

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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
    https://openvpn.net/security-advisories/ x_refsource_CONFIRM
    Show details on NVD website

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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
    Date Public
    2017-05-05 00:00
    Show details on NVD website

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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
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    Date Public
    2014-12-01 00:00
    Show details on NVD website

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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
    Date Public
    2014-07-01 00:00
    Show details on NVD website

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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
    References
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    http://osvdb.org/93111 vdb-entryx_refsource_OSVDB
    http://openvpn.net/index.php/access-server/downlo… x_refsource_CONFIRM
    Date Public
    2013-05-08 00:00
    Show details on NVD website

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