Cisco Nexus Dashboard Configuration Backup REST API Unauthorized Access (cisco-sa-nd-cbid-5YqkOSHu)

medium Nessus Plugin ID 304810

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Nexus Dashboard is affected by a vulnerability.

- 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. (CVE-2026-20042)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwq66302

See Also

http://www.nessus.org/u?037f7056

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwq66302

Plugin Details

Severity: Medium

ID: 304810

File Name: cisco-sa-nd-cbid-5YqkOSHu.nasl

Version: 1.1

Type: Combined

Family: CISCO

Published: 4/3/2026

Updated: 4/3/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: High

Base Score: 7.7

Temporal Score: 5.7

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:N

CVSS Score Source: CVE-2026-20042

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:nexus_dashboard

Required KB Items: installed_sw/Nexus Dashboard

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2026

Vulnerability Publication Date: 4/1/2026

Reference Information

CVE: CVE-2026-20042

CWE: 295

CISCO-SA: cisco-sa-nd-cbid-5YqkOSHu

IAVA: 2026-A-0292

CISCO-BUG-ID: CSCwq66302