CVE-2020-11462

HIGH

Openvpn Access Server < 2.7.0 - XML Entity Expansion

Title source: rule

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.

References (1)

[Release Notes, Vendor Advisory] https://openvpn.net/vpn-server-resources/release-notes/#Release_notes_for_OpenVPN_Access_Server_283

Scores

CVSS v3 7.5

EPSS 0.0039

EPSS Percentile 60.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-776

Status published

Products (1)

openvpn/openvpn_access_server < 2.7.0

Published May 04, 2020

Tracked Since Feb 18, 2026