CVE-2025-20327
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-24

Last updated on: 2025-09-26

Assigner: Cisco Systems, Inc.

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.
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Meta Information
Published
2025-09-24
Last Modified
2025-09-26
Generated
2026-06-16
AI Q&A
2025-09-24
EPSS Evaluated
2026-06-14
NVD
CVE-2025-20327
EUVD
EUVD-2025-31033
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
cisco ios 3.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-1287 The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.
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Executive Summary

This vulnerability exists in the web UI of Cisco IOS Software and allows an authenticated remote attacker with low privileges to cause a denial of service (DoS) on the device. It is caused by improper input validation, where an attacker can send a specially crafted URL in an HTTP request to trigger the issue. Successfully exploiting this vulnerability causes the affected device to reload, resulting in a DoS condition.

Impact Analysis

The impact of this vulnerability is a denial of service condition on the affected Cisco IOS device. An attacker with low privileges who is authenticated can cause the device to reload unexpectedly, disrupting network services and potentially causing downtime.

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