CVE-2021-1437: Cisco Aironet Access Points FlexConnect Upgrade Information Disclosure Vulnerability

Published Mar 24, 2021
·
Updated

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).

Affected Software

14 affected components
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

Event History

Mar 24, 2021
CVE Published
via MITRE·08:05 PM
Data Sourced
via MITRE·08:05 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the vulnerability ID?

The vulnerability ID is CVE-2021-1437.

2

What is the severity of CVE-2021-1437?

The severity of CVE-2021-1437 is high with a CVSS score of 7.5.

3

What is affected by CVE-2021-1437?

Cisco Aironet Series Access Points Software is affected by CVE-2021-1437.

4

How does CVE-2021-1437 impact the affected device?

CVE-2021-1437 allows an unauthenticated, remote attacker to obtain confidential information from the affected device.

5

Is there a fix available for CVE-2021-1437?

Yes, Cisco has released a software update to address the vulnerability.

Contact

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