CVE-2025-20240CWE-692

CVE-2025-20240

Medium · published September 24, 2025

CVSS v3.1
6.1
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

A vulnerability in the Web Authentication feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting attack (XSS) on an affected device.

This vulnerability is due to improper sanitization of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to execute a reflected XSS attack and steal user cookies from the affected device.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00290 · 20.4th percentile
Weakness
CWE-692 · Incomplete Denylist to Cross-Site Scripting
Published
2025-09-24T22:15Z
References (1)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-xss-VWyDgjOU · [email protected]
EPSS history
Timeline
  • 24 SEP 17:14Z
    A vulnerability in the Web Authentication feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a reflected cross-site…
    cvelistv5