CVE-2021-1615: Cisco Embedded Wireless Controller Software for Catalyst Access Points Denial of Service Vulnerability

Published Sep 23, 2021
·
Updated

A vulnerability in the packet processing functionality of Cisco Embedded Wireless Controller (EWC) Software for Catalyst Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected AP. This vulnerability is due to insufficient buffer allocation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to exhaust available resources and cause a DoS condition on an affected AP, as well as a DoS condition for client traffic traversing the AP.

Affected Software

7 affected components
Cisco Embedded Wireless Controller<=17.6.1
cisco Catalyst 9105
cisco Catalyst 9115
cisco Catalyst 9117
cisco Catalyst 9120
cisco Catalyst 9124
cisco Catalyst 9130

Event History

Sep 23, 2021
CVE Published
via MITRE·02:30 AM
Data Sourced
via MITRE·02:30 AM
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 vulnerability ID for this Cisco Embedded Wireless Controller (EWC) Software vulnerability?

The vulnerability ID is CVE-2021-1615.

2

What is the severity of CVE-2021-1615?

The severity of CVE-2021-1615 is high with a CVSS score of 8.6.

3

How does CVE-2021-1615 affect Cisco Embedded Wireless Controller (EWC) Software?

CVE-2021-1615 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected AP.

4

Which versions of Cisco Embedded Wireless Controller (EWC) Software are affected by CVE-2021-1615?

Cisco Embedded Wireless Controller (EWC) Software version 17.6.1 is affected by CVE-2021-1615.

5

Where can I find more information about CVE-2021-1615?

You can find more information about CVE-2021-1615 in the Cisco Security Advisory at https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewc-dos-g6JruHRT.

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
CVE-2021-1615 - Cisco Embedded Wireless Controller Software for Catalyst Access Points Denial of Service Vulnerability - SecAlerts