Cisco has published a security advisory to investigate and address a critical vulnerability, tracked as CVE-2021-4428 that can affect multiple of its products on December 10th, 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information on this update, you can follow this URL:
The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary.
PDF Download: Cisco Security Advisory.pdf
Cisco security advisory (10th December 2021). Retrieved from Cisco.
Cisco security advisory (15th December 2021). Retrieved from Canadian Centre for Cyber Security.