Vulnerability 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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Aironet Access Point Software | - |
| Cisco | 1100 Integrated Services Router | - |
| Cisco | Aironet 1540 | - |
| Cisco | Aironet 1560 | - |
| Cisco | Aironet 1800 | - |
| Cisco | Aironet 2800 | - |
| Cisco | Aironet 3800 | - |
| Cisco | Aironet 4800 | - |
| Cisco | Catalyst 9100 | - |
| Cisco | Catalyst Iw6300 | - |
| Cisco | Esw6300 | - |
| Cisco | Catalyst 9800 Firmware | >= 17.1, < 17.3.3 |
| Cisco | Catalyst 9800 | - |
| Cisco | Wireless Lan Controller Software | >= 8.10.112.0, < 8.10.142.0 |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
FAQ
What is CVE-2021-1437?
CVE-2021-1437 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 de...
How severe is CVE-2021-1437?
CVE-2021-1437 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-1437?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Aironet Access Point Software, Cisco 1100 Integrated Services Router, Cisco Aironet 1540, Cisco Aironet 1560, Cisco Aironet 1800.