CVE-2021-21976
7.2 · HIGHOverview
CVE-2021-21976 is a high-severity vulnerability affecting vmware vsphere_replication. It was published on February 11, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
vSphere Replication 8.3.x prior to 8.3.1.2, 8.2.x prior to 8.2.1.1, 8.1.x prior to 8.1.2.3 and 6.5.x prior to 6.5.1.5 contain a post-authentication command injection vulnerability which may allow an authenticated admin user to perform a remote code execution.
Remediation
Check the references section for vendor advisories and patches from vmware. Update vsphere_replication 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 | vsphere_replication | >= 6.5.0, < 6.5.1.5 | Affected |
Frequently Asked Questions
What is CVE-2021-21976?
CVE-2021-21976 is a high-severity vulnerability affecting vmware vsphere_replication. It was published on February 11, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-21976?
This vulnerability has a CVSS 3.1 base score of 7.2, 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-2021-21976?
Check the references section for vendor advisories and patches from vmware. Update vsphere_replication 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-2021-21976?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21976 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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