CVE-2021-27406

HIGH

PerFact OpenVPN-Client <1.4.1.0 - Privilege Escalation

Title source: llm
STIX 2.1

Description

An attacker can take leverage on PerFact OpenVPN-Client versions 1.4.1.0 and prior to send the config command from any application running on the local host machine to force the back-end server into initializing a new open-VPN instance with arbitrary open-VPN configuration. This could result in the attacker achieving execution with privileges of a SYSTEM user.

References (1)

Core 1
Core References
Third Party Advisory, US Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01

Scores

CVSS v3 8.8
EPSS 0.0092
EPSS Percentile 55.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-15 CWE-610
Status published
Products (1)
perfact/openvpn-client < 1.4.1.0
Published Oct 14, 2022
Tracked Since Feb 18, 2026