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TI-2021-08899 Aliases CVE-2021-27406GHSA-qxvq-2x4g-3vm7

An attacker can take leverage on PerFact OpenVPN-Client versions 1.4.1.0 and prior to…

Priority MEDIUM 43CWE-15Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0122 68th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PerFactOpenVPN-Clientup to 1.4.1.0—No fix listedCNA
  • OpenVPN-Client VendorPerFact Affected up to 1.4.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:perfact:openvpn-client:*:*:*:*:*:*:*:*up to 1.4.1.0VulnerablePerFact
  • cpe:2.3:a:perfact:openvpn-client:*:*:*:*:*:*:*:* Versions up to 1.4.1.0 Vulnerable ·PerFact

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27406
  2. 2026-10-03 Alias added: GHSA-qxvq-2x4g-3vm7

References

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences