cisco-sa-cat9k-PtmD7bgy: Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability

Published Sep 24, 2025
·
Updated

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic.This vulnerability is due to improper

Affected Software

1 affected component
Cisco IOS XE Software

Event History

Sep 24, 2025
Advisory Published
via Cisco·04:00 PM
Data Sourced
via Cisco·04:00 PM
DescriptionSeverityWeakness

Child vulnerabilities

Contains the following vulnerabilities.

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 cisco-sa-cat9k-PtmD7bgy?

The cisco-sa-cat9k-PtmD7bgy vulnerability is considered high severity due to its potential impact on network traffic.

2

How do I fix cisco-sa-cat9k-PtmD7bgy?

To fix the cisco-sa-cat9k-PtmD7bgy vulnerability, you should update to the latest version of Cisco IOS XE Software for Catalyst 9000 Series Switches.

3

Who is affected by cisco-sa-cat9k-PtmD7bgy?

The cisco-sa-cat9k-PtmD7bgy vulnerability affects users of Cisco IOS XE Software for Catalyst 9000 Series Switches.

4

What type of attack is possible with cisco-sa-cat9k-PtmD7bgy?

An attacker can exploit the cisco-sa-cat9k-PtmD7bgy vulnerability to block an egress port and drop all outbound traffic.

5

Is authentication required to exploit cisco-sa-cat9k-PtmD7bgy?

No, the cisco-sa-cat9k-PtmD7bgy vulnerability can be exploited by an unauthenticated, adjacent attacker.

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