CVE-2021-20099
6.7 · MEDIUMOverview
CVE-2021-20099 is a medium-severity vulnerability affecting tenable nessus. It was published on June 28, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from tenable. Update nessus to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tenable | nessus | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-20099?
CVE-2021-20099 is a medium-severity vulnerability affecting tenable nessus. It was published on June 28, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).
How severe is CVE-2021-20099?
This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-20099?
Check the references section for vendor advisories and patches from tenable. Update nessus to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-20099?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20099 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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