CVE-2026-20271

No fix known EPSS <1%CVSS 8.6

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-2026-20271 are related to insufficient control flow management issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-691. &nbsp;

Published 2026-08-05 · CVE record · OSV

Products: Cisco IOS XE Software