Cisco Security Advisory (23rd September 2021)

Ref# ADV2021_163 | Date: Sep 23rd 2021

Cisco has published a security advisory, highlighting vulnerabilities in multiple products listed below on the 22nd of September 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.

Cisco IOS XE SD-W AN Software on:

  • 1000 Series Integrated Services Routers (ISRs)
  • 4000 Series ISRs
  • ASR 1000 Series Aggregation Services Routers
  • Cloud Services Router 1000V Series

Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers on:

  • Catalyst 9800 Embedded Wireless Controller for Catalyst 9300, 9400, and
  • 9500 Series Switches
  • Catalyst 9800 Series Wireless Controllers
  • Catalyst 9800-CL Wireless Controllers for Cloud
  • Embedded Wireless Controller on Catalyst Access Points

Cisco IOS XE Software certain configurations

Cisco IOS XE SD-WAN Software certain configurations

For more information on these Cisco updates, you can follow this URL: day_sir#~Vulnerabilities

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Cisco Security Advisory.pdf