High severity · published Mar 24, 2021
CVE-2021-1437
A vulnerability in the FlexConnect Upgrade feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, remote attacker to obtain confidential…
7.5
CVSS
1.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Aironet Access Point Software · Cisco
All versions, or not specified · source: NVD
C9
Catalyst 9800 Firmware · Cisco
17.1 before 17.3.3 · source: NVD
WL
Wireless Lan Controller Software · Cisco
8.10.112.0 before 8.10.142.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-1437
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-1437
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-info-disc-BfWqghj
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