CVE-2022-20773
7.5 · HIGHOverview
CVE-2022-20773 is a high-severity vulnerability affecting cisco umbrella_virtual_appliance. It was published on April 21, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability in the key-based SSH authentication mechanism of Cisco Umbrella Virtual Appliance (VA) could allow an unauthenticated, remote attacker to impersonate a VA. This vulnerability is due to the presence of a static SSH host key. An attacker could exploit this vulnerability by performing a man-in-the-middle attack on an SSH connection to the Umbrella VA. A successful exploit could allow the attacker to learn the administrator credentials, change configurations, or reload the VA. Note: SSH is not enabled by default on the Umbrella VA.
Remediation
Check the references section for vendor advisories and patches from cisco. Update umbrella_virtual_appliance 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 | umbrella_virtual_appliance | >= 0, < 3.3.2 | Affected |
Frequently Asked Questions
What is CVE-2022-20773?
CVE-2022-20773 is a high-severity vulnerability affecting cisco umbrella_virtual_appliance. It was published on April 21, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2022-20773?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-20773?
Check the references section for vendor advisories and patches from cisco. Update umbrella_virtual_appliance 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-2022-20773?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-20773 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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