CVE-2026-20271: Cisco IOS XE Software Security Hardening Release
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20271?
The severity of CVE-2026-20271 is classified as high with a score of 8.6.
How do I fix CVE-2026-20271?
To fix CVE-2026-20271, update your Cisco IOS XE Software to the latest hardening release provided by Cisco.
What systems are affected by CVE-2026-20271?
CVE-2026-20271 affects Cisco IOS XE Software installations that have not been updated with the latest security hardening release.
What are the potential impacts of CVE-2026-20271?
The potential impacts of CVE-2026-20271 include decreased security posture and increased risk of exploitation in vulnerable systems.
When was CVE-2026-20271 published?
CVE-2026-20271 was published on August 5, 2026.