CVE-2025-20327

HIGH EPSS 27.3%

Published Sep 24, 20259mo ago · Modified Jun 17, 20261w ago

7.7 CVSS 3.1

High

Published Sep 24, 2025 9mo ago

Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score

7.7

Exploitability

3.1

Impact

4.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Changed

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

27.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-1287

References 1

sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.