CVE-2023-20176

MEDIUM

Cisco Catalyst 9100 Series Firmware < 17.6.6 - Unauthenticated Denial of Service via DTLS Session Exhaustion

Title source: llm
STIX 2.1

Description

A vulnerability in the networking component of Cisco access point (AP) software could allow an unauthenticated, remote attacker to cause a temporary disruption of service. This vulnerability is due to overuse of AP resources. An attacker could exploit this vulnerability by connecting to an AP on an affected device as a wireless client and sending a high rate of traffic over an extended period of time. A successful exploit could allow the attacker to cause the Datagram TLS (DTLS) session to tear down and reset, causing a denial of service (DoS) condition.

Scores

CVSS v3 5.8
EPSS 0.0012
EPSS Percentile 30.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Details

CWE
CWE-400
Status published
Products (5)
cisco/catalyst_9124_firmware < 17.6.6
cisco/catalyst_9130_firmware < 17.6.6
cisco/catalyst_9136_firmware < 17.6.6
cisco/catalyst_9164_firmware < 17.6.6
cisco/catalyst_9166_firmware < 17.6.6
Published Sep 27, 2023
Tracked Since Feb 18, 2026