Cisco Advance Notification for Publication of October 7, 2026, Security Advisories
CVE-2026-76455CVE-2026-76456CVE-2026-76457+1rce
On October 7, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate the vulnerabilities that were disclosed on October 7, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the Foundation: A Predictable, Customer-Focused Response to AI-Accelerated Vulnerability Discovery. Cisco NX-OS Software Cisco Security Advisory CVE ID Security Impact Rating CVSS Base Score Cisco NX-OS Software Security Hardening Release: October 2026 CVE-2026-76455CVE-2026-76456CVE-2026-76457CVE-2026-76459CVE-2026-76458CVE-2026-76453 Critical 9.8 Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability CVE-2026-76465 Critical 9.8 Cisco Nexus 3000 and 9000 Series Switches NGOAM Remote Code Execution Vulnerabilities CVE-2026-76485CVE-2026-76486CVE-2026-76501 Critical 9.8 Cisco NX-OS Software NX-API Remote Code Execution Vulnerability CVE-2026-76471 Critical 9.8 Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability CVE-2026-20038 Medium 5.8 Cisco NX-OS Software Control Plane Denial of Service Vulnerability CVE-2026-20173 Medium 5.8 Cisco NX-OS Software Python Sandbox Escape Vulnerability CVE-2026-20032 Medium 4.4 Cisco Application Policy Infrastructure Controller Cisco Security Advisory CVE ID