What’s Vulnerable › Vulnerabilities

CVE-2021-27406: PerFact OpenVPN-Client

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-14 · updated 2026-06-17
• Weakness: CWE-15

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 products

• PerFact OpenVPN-Client: through 1.4.1.0

References

• https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01

Get alerted when CVE-2021-27406 or the next vulnerability affects your stack