Cisco security advisory (AV26-281)

Serial number: AV26-281
Date: March 25, 2026

On March 25, 2026, Cisco published a security advisory to address vulnerabilities in the following products:

  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst 9200 Series Switches
  • Cisco Catalyst 9000 Series Switches
  • Cisco Catalyst ESS9300 Embedded Series Switches
  • Cisco IOS Software
  • Cisco IOS XE Software
  • Cisco Secure Firewall ASA Software
  • Cisco Secure FTD Software
  • Cisco Catalyst IE9310 and IE9320 Rugged Series Switches
  • Cisco IE3500 and IE3505 Rugged Series Switches
  • Cisco Catalyst CW9800H Wireless Controllers
  • Cisco Catalyst CW9800M Wireless Controllers
  • Cisco Catalyst CW9800H1 Wireless Controllers
  • Cisco Meraki MS390
  • Cisco Catalyst SD-WAN Manager

The Cyber Centre encourages users and administrators to review the provided web links, perform the suggested recommendations, and apply the necessary updates when available.

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