CVE-2026-20275

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20275 are related to incorrect calculation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-682.

  • Published Sep 2, 2026
  • CVSS 8.8 high
  • 0.2% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-20275 at the National Vulnerability Database