Is CVE-2021-20100 in the CISA KEV catalog?

No. CVE-2021-20100 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20100?

CVE-2021-20100 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2021-20100?

CVE-2021-20100 has an EPSS score of 0.35% (27th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20100?

Upgrade nessus to 8.2.5 or later.

CVE & CISA-KEV Catalog

CVE-2021-20100

MEDIUM

6.7

CVSS v3

NVD

Description

Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows executables as the Nessus host. This is different than CVE-2021-20099.

How to fix

Remediation Available

nessusNVD

Affected:< 8.2.5Fixed in:8.2.5CVE-2021-20100derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.35%probability of exploitation in 30 days

27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Vendor Advisory1

tenable.com

Embed a live status badge for CVE-2021-20100

Markdown

[![CVE-2021-20100](https://tridentstack.com/cve/badge/CVE-2021-20100.svg)](https://tridentstack.com/cve/CVE-2021-20100)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-20100"><img src="https://tridentstack.com/cve/badge/CVE-2021-20100.svg" alt="CVE-2021-20100"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.