Strix
26.1K

CVE-2021-1423

MEDIUMCVSS 4.4/10EPSS 0.23%

Last modified

CVE-2021-1423 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. A vulnerability in the implementation of a CLI command in Cisco Aironet Access Points (AP) could allow an authenticated, local attacker to overwrite files in the flash memory of the device. This vulnerability is due to insufficient input validation for a specific command. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

A vulnerability in the implementation of a CLI command in Cisco Aironet Access Points (AP) could allow an authenticated, local attacker to overwrite files in the flash memory of the device. This vulnerability is due to insufficient input validation for a specific command. An attacker could exploit this vulnerability by issuing a command with crafted arguments. A successful exploit could allow the attacker to overwrite or create files with data that is already present in other files that are hosted on the affected device.

Metrics

CVSS 3.1
4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS Probability
0.23%

13.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAironet Access Point SoftwareAll versions
CiscoCatalyst 9800 Firmware< 16.12.5
CiscoCatalyst 9800 Firmware>= 17.1, <= 17.2
CiscoWireless Lan Controller Software< 8.5.171.0
CiscoWireless Lan Controller Software>= 8.6, < 8.10.130.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1423?
A vulnerability in the implementation of a CLI command in Cisco Aironet Access Points (AP) could allow an authenticated, local attacker to overwrite files in the flash memory of the device. This vulnerability is due to insufficient input validation for a specific command. An attacker could exploit this vulnerability by issuing a command with crafted arguments. A successful exploit could allow the attacker to overwrite or create files with data that is already present in other files that are hosted on the affected device.
How severe is CVE-2021-1423?
CVE-2021-1423 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1423?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-1423?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST