CVE-2021-20076
8.8 · HIGHOverview
CVE-2021-20076 is a high-severity vulnerability affecting tenable tenable.sc. It was published on March 3, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Tenable.sc and Tenable.sc Core versions 5.13.0 through 5.17.0 were found to contain a vulnerability that could allow an authenticated, unprivileged user to perform Remote Code Execution (RCE) on the Tenable.sc server via Hypertext Preprocessor unserialization.
Remediation
Check the references section for vendor advisories and patches from tenable. Update tenable.sc 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 | tenable.sc | 5.13.0 | Affected |
Frequently Asked Questions
What is CVE-2021-20076?
CVE-2021-20076 is a high-severity vulnerability affecting tenable tenable.sc. It was published on March 3, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2021-20076?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-20076?
Check the references section for vendor advisories and patches from tenable. Update tenable.sc 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-2021-20076?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20076 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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Browser-based exploitation validates findings with real proof-of-concept.
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