CVE-2026-20267

CRITICAL · CVSS 9.0 · EPSS 0.23% · CWE CWE-284

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20267 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

CVE-2026-20267 is confirmed by Cisco as affecting 4 products, including Cisco IOS XE Software, Cisco Adaptive Security Appliance (ASA) Software, and Cisco IOS XE Catalyst SD-WAN, and 1 more, via 1 advisory (CVSS 9.0; EPSS 0.2%).

4 products with CSAF evidence