High Threat Security Alert (A25-09-17): Multiple Vulnerabilities in Cisco Products


 

Published on: 25 September 2025

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Description:

Cisco released security advisories to address multiple vulnerabilities in 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.

Reports indicated that the denial-of-service vulnerability (CVE-2025-20352) in Cisco IOS and IOS XE Software is being exploited in the wild. In addition, the proof-of-concept (PoC) exploit code for the denial-of-service vulnerability (CVE-2025-20149) and the spoofing vulnerability (CVE-2025-20240) in Cisco IOS and IOS XE Software are publicly available. Cisco has released security updates to address the issues. System administrators are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.

 

Affected Systems:

  • Cisco Access Point Software
  • Cisco IOS Software
  • Cisco IOS XE Software
  • Cisco SD-WAN vEdge Software

    •  

    Impact:

    Depending on the vulnerabilities being exploited, a successful exploitation could lead to remote code execution, denial of service, elevation of privilege, information disclosure or security restriction bypass of 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-cat9k-acl-L4K7VXgD
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmpwred-x3MJyf5M
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-arg-inject-EyDDbh4e
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nbar-dos-LAvwTmeT
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-PtmD7bgy
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-defaultacl-pSJk9nVF
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ipv6-gw-tUAzpn9O
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-xss-VWyDgjOU
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-9800cl-openscep-SB4xtxzP
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secboot-UqFD8AvC
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-action-frame-inj-QqCNcz8H
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-cmd-inject-rPJM8BGL
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-tacacs-hdB7thJw
    • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-cli-EB7cZ6yO
    • https://www.hkcert.org/security-bulletin/cisco-products-multiple-vulnerabilities_20250925
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20149
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20160
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20240
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20293
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20311 (to CVE-2025-20316)
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20327
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20334
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20338 (to CVE-2025-20339)
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20352
    • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20364 (to CVE-2025-20365)


    Tag: Cisco , Cisco Access Point , Cisco IOS , Cisco SD-WAN
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