high
7.4
CWE
400 20
Advisory Published
Updated

CVE-2020-3409: Cisco IOS and IOS XE Software PROFINET Denial of Service Vulnerability

First published: Thu Sep 24 2020(Updated: )

A vulnerability in the PROFINET feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to crash and reload, resulting in a denial of service (DoS) condition on the device. The vulnerability is due to insufficient processing logic for crafted PROFINET packets that are sent to an affected device. An attacker could exploit this vulnerability by sending crafted PROFINET packets to an affected device for processing. A successful exploit could allow the attacker to cause the device to crash and reload, resulting in a DoS condition on the device.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS=15.2\(7\)e
Cisco IOS XE=15.2\(7\)e
Cisco IE 4000 Series
Cisco IE 4000 Series Switch
Cisco IE 4000 Series Switches
Cisco IE 4000 Series Switches
Cisco IE 4000 Series Industrial Ethernet Switches
Cisco IE 4000 Series Switches
Cisco IE 4000 Series Switches
Cisco IE-4000 Series Switches
Cisco IE-4000 Series
Cisco IE 4000 Series Switch
Cisco IE-4000 Series Switch
Cisco IE 4000 Series Switch
Cisco IOS XE=16.11.1a
Cisco IOS=16.11.1a
Cisco Industrial Ethernet 3200 Series Switches
Cisco IE-3200-8P2S-E
Cisco IE-3300-8P2S-A
Cisco IE-3300-8P2S-E
Cisco IE-3300-8T2X-A
Cisco IE 3300-8T2S-E
Cisco IE-3300-8T2X-A
Cisco IE-3300-8U2X-E
Cisco IE-3400-8P2S-A
Cisco IE 3400-8P2S-E
Cisco IE 3400 Series Switches
Cisco IEM 3300 Series
Cisco IEM-3300 Series
Cisco IEM-3300 Series
Cisco IEM-3300 Series
Cisco Industrial Ethernet 3300 Series Switches
Cisco IEM-3300-8S
Cisco IEM 3300-8T
Cisco IEM 3400-8P
Cisco IEM-3400 Series
Cisco IEM-3400 Series

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is CVE-2020-3409?

    CVE-2020-3409 is a vulnerability in the PROFINET feature of Cisco IOS Software and Cisco IOS XE Software that could allow an unauthenticated attacker to cause a denial of service (DoS) on the affected device.

  • What is the severity of CVE-2020-3409?

    CVE-2020-3409 has a severity rating of 7.4 (high).

  • Which software versions are affected by CVE-2020-3409?

    CVE-2020-3409 affects Cisco IOS Software 15.2(7)e and Cisco IOS XE Software 15.2(7)e.

  • How can an attacker exploit CVE-2020-3409?

    An attacker can exploit CVE-2020-3409 by sending a specially crafted PROFINET packet to the target device, causing it to crash and reload.

  • Is there a fix available for CVE-2020-3409?

    Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

Company

Resources

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.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203