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CVE-2023-20202

MEDIUMCVSS 6.5/10EPSS 0.24%

Last modified

CVE-2023-20202 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of network requests to an affected device. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of network requests to an affected device. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to reload, resulting in a DoS condition.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
0.24%

14.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe17.9.1
CiscoIos Xe17.9.1a
CiscoIos Xe17.9.1w
CiscoIos Xe17.9.1x
CiscoIos Xe17.9.1x1
CiscoIos Xe17.9.1y
CiscoIos Xe17.9.2
CiscoIos Xe17.9.2a
CiscoIos Xe17.9.2b
CiscoIos Xe17.10.1
CiscoIos Xe17.10.1a
CiscoIos Xe17.10.1b

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20202?
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper memory management. An attacker could exploit this vulnerability by sending a series of network requests to an affected device. A successful exploit could allow the attacker to cause the wncd process to consume available memory and eventually cause the device to reload, resulting in a DoS condition.
How severe is CVE-2023-20202?
CVE-2023-20202 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20202?
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-2023-20202?

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

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Source: NVD / NIST