CVE-2026-84790

OpenVPN 2.7.x Remote Authenticated Certificate Subject Field for Account Impersonation

Published Oct 13, 2026 CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed
Description
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8953-1 OpenVPN vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openvpn
Openvpn openvpn
Vendors & Products Openvpn
Openvpn openvpn
Type Values Removed Values Added
Title OpenVPN 2.7.x Remote Authenticated Certificate Subject Field for Account Impersonation
Type Values Removed Values Added
Description OpenVPN 2.3.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
Type Values Removed Values Added
Description OpenVPN 2.3.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
Weaknesses CWE-158
CWE-290
References
Metrics cvssV4_0

{'score': 7.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OpenVPN
Published
Updated
Oct 18, 2026, 1:54 PM
Reserved
Sep 2, 2026, 10:17 AM
Status
Awaiting Analysis
Published
Oct 13, 2026, 10:18 PM
Modified
Oct 18, 2026, 2:16 PM