What is CVE-2024-20303?

CVE-2024-20303 is a high-severity vulnerability in Cisco Catalyst 9105axi, classified under Incomplete Cleanup. CVSS score: 7.4/10. Published 2024-03-27.

How severe is CVE-2024-20303?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Cisco Catalyst 9105axi

CVE-2024-20303

A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper management of mDNS client entries. An attacker could exploit this vulnerability by connecting to the wireless network and sending a continuous stream of specific mDNS packets. A successful exploit could allow the attacker to cause the wireless controller to have high CPU utilization, which could lead to access points (APs) losing their connection to the controller and result in a DoS condition.

EPSS: 0.003 (25.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-459 — Incomplete Cleanup

References

psirt@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2024-20303?: CVE-2024-20303 is a high-severity vulnerability in Cisco Catalyst 9105axi, classified under Incomplete Cleanup. CVSS score: 7.4/10. Published 2024-03-27.
How severe is CVE-2024-20303?: High severity. CVSS v3 base score is 7.4 out of 10.