Cisco security advisory (AV26-807)

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        <div><p><strong>Serial number: </strong>AV26-807<br /><strong>Date: </strong>August&nbsp;12, 2026</p>

As of August 11, 2026, Cisco is affected by a vulnerability in the following products:

  • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
    • multiple versions
  • Cisco Secure Firewall Threat Defense (FTD) Software
    • multiple versions

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

On August 11, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-20349 to their Known Exploited Vulnerabilities (KEV) Database.

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Article Link: Cisco security advisory (AV26-807) - Canadian Centre for Cyber Security