CVE-2021-1437
7.5 · HIGHOverview
CVE-2021-1437 is a high-severity vulnerability affecting cisco aironet_access_point_software. It was published on March 24, 2021 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 FlexConnect Upgrade feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, remote attacker to obtain confidential information from an affected device. This vulnerability is due to an unrestricted Trivial File Transfer Protocol (TFTP) configuration. An attacker could exploit this vulnerability by sending a specific TFTP request to an affected device. A successful exploit could allow the attacker to download any file from the filesystem of the affected access point (AP).
Remediation
Check the references section for vendor advisories and patches from cisco. Update aironet_access_point_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 | catalyst_9800_firmware | >= 17.1, < 17.3.3 | Affected |
| cisco | wireless_lan_controller_software | >= 8.10.112.0, < 8.10.142.0 | Affected |
Frequently Asked Questions
What is CVE-2021-1437?
CVE-2021-1437 is a high-severity vulnerability affecting cisco aironet_access_point_software. It was published on March 24, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-1437?
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-2021-1437?
Check the references section for vendor advisories and patches from cisco. Update aironet_access_point_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-2021-1437?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1437 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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