CVE-2021-21997
5.5 · MEDIUMOverview
CVE-2021-21997 is a medium-severity vulnerability affecting vmware tools. It was published on June 18, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
VMware Tools for Windows (11.x.y prior to 11.3.0) contains a denial-of-service vulnerability in the VM3DMP driver. A malicious actor with local user privileges in the Windows guest operating system, where VMware Tools is installed, can trigger a PANIC in the VM3DMP driver leading to a denial-of-service condition in the Windows guest operating system.
Remediation
Check the references section for vendor advisories and patches from vmware. Update tools 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 |
|---|---|---|---|
| vmware | tools | >= 11.0.0, < 11.3.0 | Affected |
Frequently Asked Questions
What is CVE-2021-21997?
CVE-2021-21997 is a medium-severity vulnerability affecting vmware tools. It was published on June 18, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2021-21997?
This vulnerability has a CVSS 3.1 base score of 5.5, 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-2021-21997?
Check the references section for vendor advisories and patches from vmware. Update tools 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-2021-21997?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21997 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
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