Security Alert (A26-03-29): Multiple Vulnerabilities in Cisco Products


 

Published on: 26 March 2026

Description:

Cisco has released security updates to address multiple vulnerabilities in several Cisco devices and software. For information about the vulnerabilities and the attacking vectors, please refer to the corresponding security advisories at the vendor's website.

 

Affected Systems:

  • Cisco Catalyst SD-WAN Manager
  • Cisco IOS Software
  • Cisco IOS XE Software
  • Cisco IOS XE Wireless Controller Software
  • Cisco Secure Firewall Adaptive Security Appliance Software
  • Cisco Secure Firewall Threat Defense Software

For detailed information of the affected products, please refer to the section "Affected Products" of corresponding security advisory at vendor's website.

 

Impact:

Depending on the vulnerabilities exploited, a successful attack could lead to remote code execution, denial of service, elevation of privilege, information disclosure or security restriction bypass on an affected system.

 

Recommendation:

Software updates for affected systems are now available. System administrators of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk. For detailed information of the available patches, please refer to the section "Fixed Software" of corresponding security advisory at vendor's website.

System administrators should contact their product support vendors for the fixes and assistance.

 

More Information:

  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-kPEpQGGK
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bootp-WuBhNBxA
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-http-dos-sbv8XRpL
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-lobby-privesc-KwxBqJy
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-mntc-dos-LZweQcyq
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-tls-dos-TVgLDEZL
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe_infodis-6J847uEB
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-crlf-NvgKTKJZ
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-xss-LpGkzwtJ
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-scp-dos-duAdXtCg
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-xss-ZqkhP9W9
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-hnX5KGOm
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xe-secureboot-bypass-B6uYxYSZ
  • https://www.hkcert.org/security-bulletin/cisco-ios-xe-multiple-vulnerabilities_20260326
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20004
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20012
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20083 (to CVE-2026-20084)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20086
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20104
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20108
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20110
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20112 (to CVE-2026-20115)
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20125


Tag: Cisco , Cisco IOS , Cisco Secure Firewall ASA , Cisco Secure FTD , Cisco Catalyst SD-WAN
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