PT-2025-20248 · Cisco · Cisco Ios Xe

Published 2025-05-07 · Updated 2025-05-07 · CVE-2025-20140

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software for Wireless LAN Controllers (WLCs) (affected versions not specified)

Description A vulnerability in the Wireless Network Control daemon (wncd) could allow an unauthenticated, adjacent wireless attacker to cause a denial of service (DoS) condition due to improper memory management. An attacker could exploit this vulnerability by sending a series of IPv6 network requests from an associated wireless IPv6 client 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 stop responding, resulting in a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-789

Related Identifiers

BDU:2025-10328

CVE-2025-20140

Affected Products

Cisco Ios Xe

References · 6

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-wncd-p6Gvt6HL · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-20140 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-20140 · Security Note
• https://bdu.fstec.ru/vul/2025-10328 · Security Note
• https://twitter.com/CVEnew/status/1920246407350370630 · Twitter Post
• https://twitter.com/syedaquib77/status/1920177308368793930 · Twitter Post