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Medium 6.3Published Oct 22, 2026

CVE-2026-106017Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.

Updated under an hour ago ()

Does this affect you?

It affects OpenVPN 3 Core Library. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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

CVSS
6.3 MEDIUM (v4.0, CNA)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
Weakness (CWE)
CWE-295
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
OpenVPN
NVD analysis
Awaiting Analysis
Record last updated
Oct 22, 2026
First seen by InfoSec Signals
Oct 22, 2026

Affected products

Affected products
OpenVPN OpenVPN 3 Core Library
openvpn:3_core_library (from the name)
from 3.4 through 3.11.7
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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