CVE-2025-20327CWE-1287

CVE-2025-20327

High · published September 24, 2025

CVSS v3.1
7.7
EPSS
0%
Percentile
32.7
In the wild
Unconfirmed
What it is

A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00397 · 32.7th percentile
Weakness
CWE-1287 · Improper Validation of Specified Type of Input
Published
2025-09-24T22:15Z
Affected products (29)
ProductVersionsFixed in
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References (1)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u · [email protected]
EPSS history
Timeline
  • 24 SEP 17:11Z
    A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS)…
    cvelistv5