CVE-2025-20327: Input Validation

Published Sep 24, 2025
·
Updated

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.

Affected Software

1 affected component
Cisco IOS Software

Event History

Sep 24, 2025
CVE Published
via MITRE·05:11 PM
Data Sourced
via MITRE·05:11 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeakness
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2025-20327?

CVE-2025-20327 has a medium severity rating due to its potential to cause a denial of service condition.

2

How do I fix CVE-2025-20327?

To remediate CVE-2025-20327, update to the latest version of Cisco IOS Software that addresses this vulnerability.

3

Who is affected by CVE-2025-20327?

CVE-2025-20327 affects devices running vulnerable versions of Cisco IOS Software.

4

What types of attacks can exploit CVE-2025-20327?

An authenticated, low-privileged attacker can exploit CVE-2025-20327 to launch a denial of service attack.

5

What causes the vulnerability in CVE-2025-20327?

CVE-2025-20327 is caused by improper input validation in the web UI of Cisco IOS Software.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203