Vulnerability Details : CVE-2021-27406
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.
Products affected by CVE-2021-27406
- cpe:2.3:a:perfact:openvpn-client:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27406
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27406
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
ICS-CERT | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-27406
-
One or more system settings or configuration elements can be externally controlled by a user.Assigned by: ics-cert@hq.dhs.gov (Secondary)
-
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-27406
-
https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01
PerFact OpenVPN-Client | CISAThird Party Advisory;US Government Resource
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