An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-11462
- 2026-10-03 Alias added: GHSA-vc6m-jhq8-gmhj
References
More Openvpn Access Server vulnerabilities
- TI-2023-25309 Use after free in OpenVPN 2 CVSS 3.1CRITICAL 9.8
- TI-2020-07187 OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a… CVSS 3.1CRITICAL 9.8
- TI-2006-01578 OpenVPN 2.0 through 2.0.5 allows remote malicious servers to execute arbitrary code on… CVSS 2.0HIGH 9.0
- TI-2023-25308 Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to… CVSS 3.1HIGH 7.5
- TI-2005-03217 Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x… CVSS 2.0HIGH 7.5
- TI-2025-02715 OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP… CVSS 4.0MEDIUM 6.9
Sources
- CVE-2020-11462 · CVE Program
- CVE-2020-11462 · NVD
- FIRST EPSS
- GHSA-vc6m-jhq8-gmhj · GitHub Advisory Database · CC BY 4.0
- CVE-2020-11462 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences