AI analysis
CVE-2026-20326 describes one or more missing authentication for critical function issues (CWE-306) in Cisco Nexus Dashboard, discovered by Cisco's own engineering team during a proactive internal security review rather than through external report or observed attack. Because the flaw requires no privileges and no user interaction over the network (CVSS 3.1 9.8, AV:N/PR:N/UI:N), a remote unauthenticated attacker can trigger the affected critical functionality simply by sending network requests to the device. A successful exploit carries high impact to confidentiality, integrity, and availability, consistent with full compromise of the affected function or service. All organizations running affected Cisco Nexus Dashboard releases are exposed, with internet-reachable management interfaces at greatest risk. Exploitation status is currently clean: the flaw is not in CISA's KEV and no public proof-of-concept is known, and Cisco has shipped fixes as part of a software hardening release addressing multiple internally discovered vulnerabilities.
What to do: Upgrade Nexus Dashboard to the software hardening release referenced in Cisco's PSIRT advisory (check the advisory for the exact fixed version for your release train). Until patched, restrict access to the Nexus Dashboard management interface to trusted admin networks/VPN and ensure it is not exposed to the internet, and review access logs for unauthenticated requests to sensitive endpoints.
Estimated exposure
moderateplausibly low tens of thousands of Nexus Dashboard deployments worldwide, of which only a small fraction (likely a few thousand clusters) have management… — Nexus Dashboard is an enterprise data-center management/control appliance typically deployed once per organization's Cisco DC estate, so total installs roughly track Cisco's enterprise data-center customer base (estimated in the tens of…
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20326 are related to missing authentication for critical function issues that are grouped under the Common Weakness Enumeration (CWE) CWE-306.