Cisco releases IOS XE hardening updates for seven internally found vulnerabilities (CVE-2026-20267 to CVE-2026-20273)

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1. sec.cloudapps.cisco.com ↗ · pub. 02/10/2026 16:21 · coletado 19/10 18:02 primeiro registro só resumo do feed

   Cisco releases IOS XE hardening updates for seven internally found vulnerabilities (CVE-2026-20267 to CVE-2026-20273)

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   Cisco published a Software Security Hardening Release advisory for Cisco IOS XE Software. It addresses multiple vulnerabilities found during an internal security review and internal testing. Cisco states the flaws are not known to be actively exploited. It grouped the issues by Common Weakness Enumeration (CWE) class and assigned a single CVE ID per class, for seven CVEs in total: CVE-2026-20267 through CVE-2026-20273. The advisory lists a Security Impact Rating of Critical, and software updates are available.

   Technical Details

   • The article does not describe the specific weakness classes, attack vectors, authentication requirements or affected versions.
   • The vulnerabilities were discovered internally by the Cisco IOS XE engineering team.
   • No active exploitation is known, according to Cisco.

   Remediation

   • Cisco has released software updates that fix these vulnerabilities.
   • There are no workarounds, so patching is the only mitigation.
   • Consult the Cisco advisory (cisco-sa-hardening-iosxe-V8NMuMZJ) to identify fixed releases and affected versions.