Security Alert: Cisco Security Updates – October 2026

Cisco has released security updates addressing multiple vulnerabilities across its products. Exploitation of these vulnerabilities may allow an attacker to take control of an affected system.

Affected products include but are not limited to:

• Cisco Secure Email Gateway and Cisco Secure Email and Web Manager
• Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches  
• Cisco Application Policy Infrastructure Controller (APIC)
•  Cisco Catalyst SD-WAN Manager
•  Cisco IOS XE Software

Security Risks 

Successful exploitation of the identified Cisco vulnerabilities poses a critical security threat, potentially allowing attackers to gain unauthorized access, escalate control, and disrupt essential services.
 

For the full list of security patches released by Cisco, please refer to Cisco Security Advisories.

Recommended Actions

The National Cyber Security Authority (NCSA) recommends users and system administrators to:

• Follow and put in place the security updates shared by Cisco to lower the risk of vulnerability exploitation.
• Before updating or patching, please ensure that you have the latest backup that can easily be restored.

For further information and support, please contact the National Cyber Security Authority (NCSA) by email to rwcsirt@ncsa.gov.rw or call us on 9009.

References

• https://sec.cloudapps.cisco.com/security/center/publicationListing.x