What is CVE-2020-5812?

CVE-2020-5812 is a medium-severity vulnerability in Tenable Nessus Amazon Machine Image, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2021-02-06.

How severe is CVE-2020-5812?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Tenable Nessus Amazon Machine Image

CVE-2020-5812

Nessus AMI versions 8.12.0 and earlier were found to either not validate, or incorrectly validate, a certificate which could allow an attacker to spoof a trusted entity by using a man-in-the-middle (MITM) attack.

Vulnerability class: Improper Certificate Validation

Published 2021-02-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Tenable Nessus Amazon Machine Image
Tenable Nessus Ami — versions 8.12.0 and earlier

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

www.tenable.com/security/tns-2021-01 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-5812?: CVE-2020-5812 is a medium-severity vulnerability in Tenable Nessus Amazon Machine Image, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2021-02-06.
How severe is CVE-2020-5812?: Medium severity. CVSS v3 base score is 5.9 out of 10.