CVE-2020-11462

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-04 · updated 2026-06-17
Weakness: CWE-776

Description

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.

Affected products

OpenVPN Access Server: before 2.7.0; from 2.8.0 through 2.8.3 — fixed in 2.7.0

How to fix

Upgrade to a fixed version: OpenVPN Access Server 2.7.0. Check the vendor advisory for mitigations.

References

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