CVE-2025-20140 — Memory Allocation with Excessive Size Value in Cisco IOS XE Software
Severity
7.4HIGHNVD
EPSS
0.1%
top 71.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 7
Description
A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent wireless 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 IPv6 network requests from an associated wireless IPv6 client to an affected device. To associate a client to a device, an attacker may first need …
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 2.8 | Impact: 4.0
Affected Packages2 packages
🔴Vulnerability Details
2CVEList▶
CVE-2025-20140: A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthentica↗2025-05-07
GHSA▶
GHSA-pxp6-97q7-w6wm: A vulnerability in the Wireless Network Control daemon (wncd) of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthentica↗2025-05-07
📋Vendor Advisories
1Cisco
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