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TI-2020-18637 Aliases CVE-2020-36382GHSA-j34c-6692-hx97

Improper check for unusual conditions in OpenVPN Access Server

Priority LOW 37CWE-754Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-617.

Summary

OpenVPN Access Server 2.7.3 to 2.8.7 allows remote attackers to trigger an assert during the user authentication phase via incorrect authentication token data in an early phase of the user authentication resulting in a denial of service.

Why it matters now

EPSS 0.01891 79th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—OpenVPN Access Server2.7.3 to 2.8.7—No fix listedCNA
  • OpenVPN Access Server Vendor— Affected 2.7.3 to 2.8.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*2.7.3 – 2.8.7VulnerableOpenVPN
  • cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:* Versions 2.7.3 – 2.8.7 Vulnerable ·OpenVPN

Remediation

No fixed version listed by the sources yet.

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-2020-36382
  2. 2026-10-03 Alias added: GHSA-j34c-6692-hx97

References

Advisory 2

  • TI-2023-25309 Use after free in OpenVPN 2 CVSS 3.1CRITICAL 9.8
  • TI-2020-07187 OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a… CVSS 3.1CRITICAL 9.8
  • TI-2006-01578 OpenVPN 2.0 through 2.0.5 allows remote malicious servers to execute arbitrary code on… CVSS 2.0HIGH 9.0
  • TI-2023-25308 Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to… CVSS 3.1HIGH 7.5
  • TI-2005-03217 Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x… CVSS 2.0HIGH 7.5
  • TI-2025-02715 OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP… CVSS 4.0MEDIUM 6.9
See all 20 →

Sources

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