CVE-2021-1421
7.8 · HIGHOverview
CVE-2021-1421 is a high-severity vulnerability affecting cisco enterprise_nfv_infrastructure_software. It was published on May 6, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to perform a command injection attack on an affected device. The vulnerability is due to insufficient validation of user-supplied input to a configuration command. An attacker could exploit this vulnerability by including malicious input during the execution of this command. A successful exploit could allow a non-privileged attacker authenticated in the restricted CLI to execute arbitrary commands on the underlying operating system (OS) with root privileges.
Remediation
Check the references section for vendor advisories and patches from cisco. Update enterprise_nfv_infrastructure_software 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 |
|---|---|---|---|
| cisco | enterprise_nfv_infrastructure_software | >= 0, < 4.5.1 | Affected |
Frequently Asked Questions
What is CVE-2021-1421?
CVE-2021-1421 is a high-severity vulnerability affecting cisco enterprise_nfv_infrastructure_software. It was published on May 6, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-1421?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-1421?
Check the references section for vendor advisories and patches from cisco. Update enterprise_nfv_infrastructure_software 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-2021-1421?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1421 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.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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