CVE-2020-8953

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 62.9%
KEV: Not listed

Published

February 13, 2020

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://openvpn.net/security-advisories/
af854a3a-2127-422b-91ae-364da2661108https://openvpn.net/security-advisories/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 07:45 UTCEG score recompute
2026-05-27 07:45 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-8953?

CVE-2020-8953 is a critical vulnerability published on February 13, 2020. OpenVPN Access Server 2.8.x before 2.8.1 allows LDAP authentication bypass (except when a user is enrolled in two-factor authentication).

When was CVE-2020-8953 disclosed?

CVE-2020-8953 was first published in the National Vulnerability Database on February 13, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-8953 actively exploited?

CVE-2020-8953 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8953?

CVE-2020-8953 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-8953?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8953, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-8953

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8953?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)