CVE-2021-27406

PerFact OpenVPN-Client

HIGH
8.8
CVSS Score
Published: October 14, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 03:44 AM UTC
1 product affected across 1 vendorOpenvpn Client

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.4.1.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party AdvisoryUS Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHicscert
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-15CWE-610

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