Cisco IOS XE Software Wireless Controller Discovery Protocol DoS (cisco-sa-ewlc-cdp-dos-fpeks9K)

high Nessus Plugin ID 325419

Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability.

- A vulnerability in Cisco IOS XE Wireless Controller Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of access point (AP) Cisco Discovery Protocol (CDP) neighbor reports when they are processed by the wireless controller. An attacker could exploit this vulnerability by sending a crafted CDP packet to an AP. A successful exploit could allow the attacker to cause an unexpected reload of the wireless controller that is managing the AP, resulting in a DoS condition that affects the wireless network. (CVE-2025-20202)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwm14282

Plugin Details

Severity: High

ID: 325419

File Name: cisco-sa-ewlc-cdp-dos-fpeks9K-iosxe.nasl

Version: 1.1

Type: Combined

Family: CISCO

Published: 7/7/2026

Updated: 7/7/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

Percentile: 50.87

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2025-20202

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XE/Version, Host/Cisco/IOS-XE/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 5/7/2025

Vulnerability Publication Date: 5/7/2025

Reference Information

CVE: CVE-2025-20202

CWE: 805

CISCO-SA: cisco-sa-ewlc-cdp-dos-fpeks9K

IAVA: 2025-A-0318

CISCO-BUG-ID: CSCwm14282

Detections

Analytics