Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00195.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenVPN OpenVPN 3 Core Library unaffected
Version Status Constraints
3.4 affected ≤ 3.11.7

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://community.openvpn.net/Security%20Announcements/CVE-2026-106017 cve-icon cve-icon
History

Thu, 22 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Openvpn
Openvpn openvpn 3
Vendors & Products Openvpn
Openvpn openvpn 3

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 22 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Title Certificate Validation Bypass in OpenVPN 3 Core Library

Thu, 22 Oct 2026 09:30:00 +0000

Type Values Removed Values Added
Description Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.
Weaknesses CWE-295
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OpenVPN

Published:

Updated: 2026-10-22T13:37:47.238Z

Reserved: 2026-10-06T12:40:09.216Z

Link: CVE-2026-106017

cve-icon Vulnrichment

Updated: 2026-10-22T13:32:56.205Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-22T10:17:07.887

Modified: 2026-10-22T15:25:35.333

Link: CVE-2026-106017

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T14:56:54Z

Weaknesses