AlertsCisco Security Advisory

Number: AV21-540
Date: 27 October 2021

On 27 October 2021 Cisco published Security Advisories to address vulnerabilities in multiple products. Included were updates for the following:

  • Cisco FTD Software – multiple versions
  • Open Source Snort – versions prior to
  • Cisco ASA Software – multiple versions
  • Cisco FMC Software – multiple versions

Exploitation of some of these vulnerabilities could result in denial-of-service and privilege escalation.

The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary updates.

Cisco Security Advisories

Note to Readers

The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment. We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.

Date modified: