Summary

• Cisco released its semiannual Cisco IOS XR Software Security Advisory Bundled Publication on September 10, 2025. In direct response to customer feedback, Cisco releases bundles of Cisco IOS XR Software Security Advisories on the second Wednesday of the month in March and September of each calendar year.

  The September 10, 2025, release of the Cisco IOS XR Software Security Advisory Bundled Publication includes three Cisco Security Advisories that describe three vulnerabilities in Cisco IOS XR Software. Cisco has released software updates that address these vulnerabilities.

Details

• The following table identifies Cisco Security content that is associated with this bundled publication:

  Cisco Security Advisory	CVE ID	Security Impact Rating	CVSS Base Score
  Cisco IOS XR ARP Broadcast Storm Denial of Service Vulnerability	CVE-2025-20340	High	7.4
  Cisco IOS XR Software Image Verification Bypass Vulnerability	CVE-2025-20248	High	6
  Cisco IOS XR Software Management Interface ACL Bypass Vulnerability	CVE-2025-20159	Medium	5.3

   

  Related Resources

  Cisco Security Vulnerability Policy
  MITRE Common Vulnerabilities and Exposures
  Common Vulnerability Scoring System and the Security Impact Rating
  Common Vulnerability Scoring System Q & A