CVE-2020-3455
7.8 · HIGHOverview
CVE-2020-3455 is a high-severity vulnerability affecting cisco firepower_extensible_operating_system. It was published on October 21, 2020 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 the secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device which would be executed at each boot and maintain persistence across reboots.
Remediation
Check the references section for vendor advisories and patches from cisco. Update firepower_extensible_operating_system 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 | firepower_extensible_operating_system | >= 0, < 2.4.1.268 | Affected |
Frequently Asked Questions
What is CVE-2020-3455?
CVE-2020-3455 is a high-severity vulnerability affecting cisco firepower_extensible_operating_system. It was published on October 21, 2020 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2020-3455?
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-2020-3455?
Check the references section for vendor advisories and patches from cisco. Update firepower_extensible_operating_system 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-2020-3455?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-3455 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.
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