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Cisco Security Advisoriescisco-sa-hardening-iosxe-V8NMuMZJ

Cisco IOS XE Software Security Hardening Release: August 2026

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. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class ��� Common Weakness Enumeration (CWE) ��� and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxe-V8NMuMZJ Security Impact Rating: Critical CVE: CVE-2026-20267,CVE-2026-20268,CVE-2026-20269,CVE-2026-20270,CVE-2026-20271,CVE-2026-20272,CVE-2026-20273

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Scope

What the vendor says is affected

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What the vendor recommends

To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class ��� Common Weakness Enumeration (CWE) ��� and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping.

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  1. Published by Cisco

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Vulnerabilities

CVEs named in this advisory

CVE-2026-20267View CVSS, KEV, EPSS, and threat contextCVE-2026-20268View CVSS, KEV, EPSS, and threat contextCVE-2026-20269View CVSS, KEV, EPSS, and threat contextCVE-2026-20270View CVSS, KEV, EPSS, and threat contextCVE-2026-20271View CVSS, KEV, EPSS, and threat contextCVE-2026-20272View CVSS, KEV, EPSS, and threat contextCVE-2026-20273View CVSS, KEV, EPSS, and threat context
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