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TI-2026-45290 Aliases CVE-2026-63650GHSA-f94x-h63g-g9m8

Improper certificate validation in OpenVPN

Priority LOW 10CWE-115Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
High
Attack requirements
Present
Impact type
Spoofing
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-295.

Summary

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed OpenVPN (OpenVPN): 2.7.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenVPNOpenVPN2.7_alpha1 to before 2.7.62.7.6Patch availableCNA
  • OpenVPN VendorOpenVPN Affected 2.7_alpha1 to before 2.7.6 Fixed in 2.7.6 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*——OpenVPN
  • cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* Versions — — ·OpenVPN

Remediation

  • Fix · CNA OpenVPN (OpenVPN) Fixed in 2.7.6

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63650
  2. 2026-10-03 Alias added: GHSA-f94x-h63g-g9m8

References

Advisory 1

Other 1

  • TI-2024-01215 Integer overflow in OpenVPN tap-windows6 CVSS 3.1CRITICAL 9.8
  • TI-2014-04453 Unquoted Windows search path vulnerability in the ptservice service prior to… CVSS 3.1MEDIUM 5.3
  • TI-2022-00467 Authentication bypass in OpenVPN CVSS 3.1CRITICAL 9.8
  • TI-2024-18509 Unrestricted file upload in OpenVPN 2 CVSS 3.1CRITICAL 9.8
  • TI-2024-16468 The interactive service in OpenVPN 2.6.9 and earlier allows the OpenVPN service pipe to… CVSS 3.1HIGH 7.5
  • TI-2023-25309 Use after free in OpenVPN 2 CVSS 3.1CRITICAL 9.8
See all 99 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences