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8 vulnerabilities found for Access Server by OpenVPN
CVE-2025-3110 (GCVE-0-2025-3110)
Vulnerability from nvd – Published: 2026-07-08 16:19 – Updated: 2026-07-08 16:30
VLAI
EPSS
VEX
Summary
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
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 16:29 UTC
CWE
- CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://openvpn.net/as-docs/as-3-2-release-notes.html | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | Access Server |
Affected:
2.7.2 , ≤ 3.1.0
(semver)
|
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CVE-2025-50055 (GCVE-0-2025-50055)
Vulnerability from nvd – Published: 2025-10-27 13:39 – Updated: 2025-10-30 18:23
VLAI
EPSS
VEX
Summary
Cross-site scripting (XSS) vulnerability in the SAML Authentication module in OpenVPN Access Server version 2.14.0 through 2.14.3 allows configured remote SAML Assertion Consumer Service (ACS) endpoint servers to inject arbitrary web script or HTML via the RelayState parameter
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-30 18:23 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | Access Server |
Affected:
2.14.0 , ≤ 2.14.3
(semver)
cpe:2.3:a:openvpn:access_server:*:*:*:*:*:*:*:* |
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CVE-2023-46850 (GCVE-0-2023-46850)
Vulnerability from nvd – Published: 2023-11-11 00:15 – Updated: 2026-06-23 21:24
VLAI
EPSS
VEX
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-08-15 14:59 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
5 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|
| OpenVPN | Access Server |
Affected:
2.11.0 , ≤ 2.11.3
(patch release)
Affected: 2.12.0 , ≤ 2.12.2 (patch 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
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-11 14:28 UTC
CWE
- CWE-369 - Divide By Zero
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|
| OpenVPN | Access Server |
Affected:
2.11.0 , ≤ 2.11.3
(patch release)
Affected: 2.12.0 , ≤ 2.12.1 (patch release) |
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CVE-2025-3110 (GCVE-0-2025-3110)
Vulnerability from cvelistv5 – Published: 2026-07-08 16:19 – Updated: 2026-07-08 16:30
VLAI
EPSS
VEX
Summary
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
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 16:29 UTC
CWE
- CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://openvpn.net/as-docs/as-3-2-release-notes.html | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | Access Server |
Affected:
2.7.2 , ≤ 3.1.0
(semver)
|
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CVE-2025-50055 (GCVE-0-2025-50055)
Vulnerability from cvelistv5 – Published: 2025-10-27 13:39 – Updated: 2025-10-30 18:23
VLAI
EPSS
VEX
Summary
Cross-site scripting (XSS) vulnerability in the SAML Authentication module in OpenVPN Access Server version 2.14.0 through 2.14.3 allows configured remote SAML Assertion Consumer Service (ACS) endpoint servers to inject arbitrary web script or HTML via the RelayState parameter
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-30 18:23 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | Access Server |
Affected:
2.14.0 , ≤ 2.14.3
(semver)
cpe:2.3:a:openvpn:access_server:*:*:*:*:*:*:*:* |
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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
EPSS
VEX
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-08-15 14:59 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
5 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|
| OpenVPN | Access Server |
Affected:
2.11.0 , ≤ 2.11.3
(patch release)
Affected: 2.12.0 , ≤ 2.12.2 (patch release) |
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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
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-11 14:28 UTC
CWE
- CWE-369 - Divide By Zero
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenVPN | OpenVPN 2 (Community) |
Affected:
2.6.0 , ≤ 2.6.6
(minor release)
|
|
| OpenVPN | Access Server |
Affected:
2.11.0 , ≤ 2.11.3
(patch release)
Affected: 2.12.0 , ≤ 2.12.1 (patch release) |
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