VULNERABILITY INTELLIGENCE
CVE-2026-20279
CVSS score9.8 CRITICAL
EPSS probability0.49%
CISA KEVNot currently listed
Published2026-09-02
Last modified2026-09-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-20279 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
Weakness classification
- psirt@cisco.com: CWE-284