CVE-2020-8953

Name: CVE-2020-8953
Creator: NVD / NIST
Published: 2020-02-13T04:15:11.857+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.34%

Last modified Jun 17, 2026

CVE-2020-8953 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).. EPSS estimates a 1.34% chance of exploitation in the next 30 days.

Description

OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.34%

67.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Openvpn	Openvpn Access Server	>= 2.8.0, < 2.8.1

References

https://openvpn.net/security-advisories/Vendor Advisory
https://openvpn.net/security-advisories/Vendor Advisory

Timeline

Published: Feb 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8953?

OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).

How severe is CVE-2020-8953?

CVE-2020-8953 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.34% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8953?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8953?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST