{"id":"CVE-2021-27406","state":"PUBLISHED","title":"PerFact  OpenVPN-Client","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.","publishedAt":"2022-10-14T00:00:00.000Z","updatedAt":"2025-04-16T17:46:31.383Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"icscert"},"assigner":"icscert","products":["PerFact OpenVPN-Client"],"affected":[{"vendor":"PerFact","product":"OpenVPN-Client","versions":[{"version":"unspecified","status":"affected","lessThanOrEqual":"1.4.1.0","versionType":"custom"}]}],"references":["https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01"],"weaknesses":["CWE-15"],"ingestedAt":"2026-10-29T19:48:15.637Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/27xxx/CVE-2021-27406.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-27406","state":"PUBLISHED","datePublished":"2022-10-14T00:00:00.000Z","dateUpdated":"2025-04-16T17:46:31.383Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2021-02-19T00:00:00.000Z"},"containers":{"cna":{"title":"PerFact  OpenVPN-Client","descriptions":[{"lang":"en","value":"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":[{"vendor":"PerFact","product":"OpenVPN-Client","versions":[{"version":"unspecified","status":"affected","lessThanOrEqual":"1.4.1.0","versionType":"custom"}]}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-15","type":"CWE","lang":"en","description":"CWE-15 External Control of System or Configuration Setting"}]}],"providerMetadata":{"shortName":"icscert","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateUpdated":"2022-10-14T00:00:00.000Z"},"credits":[{"lang":"en","value":"Sharon Brizinov of Claroty reported this vulnerability to CISA."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"source":{"discovery":"EXTERNAL"},"solutions":[{"lang":"en","value":"PerFact has released Version 1.6.0, which mitigates this vulnerability."}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-056-01","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T20:48:16.965Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-16T17:26:59.623643Z","id":"CVE-2021-27406","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-16T17:46:31.383Z"}}]}}}