VULNERABILITY INTELLIGENCE

CVE-2026-20276

CVSS score8.6 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-09-02
Last modified2026-09-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Description

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-2026-20276 are related to insufficient control flow management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-691.

Weakness classification

  • psirt@cisco.com: CWE-691

Primary references