CVE-2026-20042

Cisco Nexus Dashboard Configuration REST API Unauthorized Access Vulnerability

Published Apr 1, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Nexus Dashboard

unknown

Version	Status	Constraints
`1.1(3e)`	affected	—
`1.1(3c)`	affected	—
`1.1(3d)`	affected	—
`1.1(0d)`	affected	—
`1.1(2i)`	affected	—
`2.0(1b)`	affected	—
`1.1(2h)`	affected	—
`1.1(0c)`	affected	—
`1.1(3f)`	affected	—
`2.1(1d)`	affected	—
`2.1(1e)`	affected	—
`2.0(2g)`	affected	—
`2.0(2h)`	affected	—
`2.1(2d)`	affected	—
`2.0(1d)`	affected	—
`2.2(1h)`	affected	—
`2.2(1e)`	affected	—
`2.2(2d)`	affected	—
`2.1(2f)`	affected	—
`2.3(1c)`	affected	—
`2.3(2b)`	affected	—
`2.3(2c)`	affected	—
`2.3(2d)`	affected	—
`2.3(2e)`	affected	—
`3.0(1f)`	affected	—
`3.0(1i)`	affected	—
`3.1(1k)`	affected	—
`3.1(1l)`	affected	—
`3.2(1e)`	affected	—
`3.2(1i)`	affected	—
`3.3(1a)`	affected	—
`3.3(1b)`	affected	—
`3.3(2b)`	affected	—
`4.0(1i)`	affected	—
`3.3(2g)`	affected	—
`3.2(2f)`	affected	—
`3.2(2g)`	affected	—
`3.2(2m)`	affected	—
`3.1(1n)`	affected	—
`4.1(1g)`	affected	—

Configuration 1 [-]

cpe:2.3:a:cisco:nexus_dashboard:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Cisco

Nexus Dashboard

Version	Status	Scheme	Platform
`1.1(3e)`	affected	generic	—
`1.1(3c)`	affected	generic	—
`1.1(3d)`	affected	generic	—
`1.1(0d)`	affected	generic	—
`1.1(2i)`	affected	generic	—
`2.0(1b)`	affected	generic	—
`1.1(2h)`	affected	generic	—
`1.1(0c)`	affected	generic	—
`1.1(3f)`	affected	generic	—
`2.1(1d)`	affected	generic	—
`2.1(1e)`	affected	generic	—
`2.0(2g)`	affected	generic	—
`2.0(2h)`	affected	generic	—
`2.1(2d)`	affected	generic	—
`2.0(1d)`	affected	generic	—
`2.2(1h)`	affected	generic	—
`2.2(1e)`	affected	generic	—
`2.2(2d)`	affected	generic	—
`2.1(2f)`	affected	generic	—
`2.3(1c)`	affected	generic	—
`2.3(2b)`	affected	generic	—
`2.3(2c)`	affected	generic	—
`2.3(2d)`	affected	generic	—
`2.3(2e)`	affected	generic	—
`3.0(1f)`	affected	generic	—
`3.0(1i)`	affected	generic	—
`3.1(1k)`	affected	generic	—
`3.1(1l)`	affected	generic	—
`3.2(1e)`	affected	generic	—
`3.2(1i)`	affected	generic	—
`3.3(1a)`	affected	generic	—
`3.3(1b)`	affected	generic	—
`3.3(2b)`	affected	generic	—
`4.0(1i)`	affected	generic	—
`3.3(2g)`	affected	generic	—
`3.2(2f)`	affected	generic	—
`3.2(2g)`	affected	generic	—
`3.2(2m)`	affected	generic	—
`3.1(1n)`	affected	generic	—
`4.1(1g)`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.305% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

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

History

Apr 3, 2026 10:15 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco nexus Dashboard
Vendors & Products		Cisco Cisco nexus Dashboard

Apr 1, 2026 11:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Cisco Nexus Dashboard Configuration REST API Unauthorized Access Vulnerability
Weaknesses		CWE-295
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nd-cbid-5YqkOSHu
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`