Vulnerability record · CVE-2021-31776 · published 29 April 2021

CVE-2021-31776: Aviatrix vpn client unquoted search path vulnerability

Aviatrix · Vpn Client

Aviatrix VPN Client before 2.14.14 on Windows has an unquoted search path that enables local privilege escalation to the SYSTEM user, if the machine is misconfigured to allow unprivileged users to write to directories that are supposed to be restricted to administrators.

7.8 CVSS 3.1 High EPSS 0.31% · top 78.1% CWE-428 · Unquoted search path

7.8CVSS 3.1 base score, v2 7.2

0.31%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Vpn Client Aviatrix

References

Link	Tags
https://docs.aviatrix.com/Downloads/samlclient.html	ProductVendor Advisory
https://docs.aviatrix.com/Downloads/samlclient.html#windows-win	ProductVendor Advisory
https://docs.aviatrix.com/HowTos/changelog.html#aviatrix-vpn-client-changelog	Release NotesVendor Advisory
https://docs.aviatrix.com/Downloads/samlclient.html	ProductVendor Advisory
https://docs.aviatrix.com/Downloads/samlclient.html#windows-win	ProductVendor Advisory
https://docs.aviatrix.com/HowTos/changelog.html#aviatrix-vpn-client-changelog	Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-13417Aviatrix controller vulnerabilityAn Elevation of Privilege issue was discovered in Aviatrix VPN Client before 2.10.7, because of an incomplete fix for CVE-2020-7224. This affects Lin…EPSS 2.3%22 May 2020 7.8CVE-2019-17387Aviatrix vpn client vulnerabilityAn authentication flaw in the AVPNC_RP service in Aviatrix VPN Client through 2.2.10 allows an attacker to gain elevated privileges through arbitrary…EPSS 0.72%5 Dec 2019 7.8CVE-2019-17388Aviatrix vpn client incorrect permission assignment vulnerabilityWeak file permissions applied to the Aviatrix VPN Client through 2.2.10 installation directory on Windows and Linux allow a local attacker to execute…EPSS 0.57%5 Dec 2019 5.3CVE-2020-13413Aviatrix controller observable discrepancy vulnerabilityAn issue was discovered in Aviatrix Controller before 5.4.1204. There is a Observable Response Discrepancy from the API, which makes it easier to per…EPSS 1.4%22 May 2020

Source: NIST National Vulnerability Database (record CVE-2021-31776), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.