Cisco has published a security advisory highlighting vulnerabilities in multiple of its products on 25th August 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information about these Cisco updates, you can follow the URLs:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-frw-Nt3RYxR2
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-pesc-pkmGK4J
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-chvul-CKfGYBh8
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Cisco Release Security Updates for Multiple Products.pdf
References
https://cyber.gc.ca/en/alerts/cisco-security-advisory-89
https://tools.cisco.com/security/center/publicationListing.x