CVE-2026-20272: Cisco IOS XE Software Security Hardening Release

Published Aug 5, 2026

Updated

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-2026-20272 are related to issues with improper neutralization of special elements that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-74.

Event History

Aug 5, 2026

CVE Published

via MITRE·04:19 PM

Data Sourced

via MITRE·04:19 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-20272?

CVE-2026-20272 has a critical severity score of 9.8.

How do I fix CVE-2026-20272?

To fix CVE-2026-20272, you need to apply the latest Cisco IOS XE Software Security Hardening Release.

What systems are affected by CVE-2026-20272?

CVE-2026-20272 affects devices running impacted versions of Cisco IOS XE.

What are the potential impacts of CVE-2026-20272?

CVE-2026-20272 may allow unauthorized access, potentially leading to data compromise or device control.

Is CVE-2026-20272 part of a larger issue?

Yes, CVE-2026-20272 is part of a series of vulnerabilities addressed through Cisco's software hardening efforts.

CVE-2026-20272: Cisco IOS XE Software Security Hardening Release

Event History

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Frequently Asked Questions

What is the severity of CVE-2026-20272?

How do I fix CVE-2026-20272?

What systems are affected by CVE-2026-20272?

What are the potential impacts of CVE-2026-20272?

Is CVE-2026-20272 part of a larger issue?

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Frequently Asked Questions

What is the severity of CVE-2026-20272?

How do I fix CVE-2026-20272?

What systems are affected by CVE-2026-20272?

What are the potential impacts of CVE-2026-20272?

Is CVE-2026-20272 part of a larger issue?