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Cisco Nexus Dashboard Insights Arbitrary File Write Vulnerability

mediumCVE-2026-20174
A vulnerability in the Metadata update feature of Cisco Nexus Dashboard Insights could allow an authenticated, remote attacker to write arbitrary files to an affected system. This vulnerability is due to insufficient validation of the metadata update file. An attacker could exploit this vulnerability by crafting a metadata update file and manually uploading it to an affected device. A successful exploit could allow the attacker to write arbitrary files to the underlying operating system as the root user. To exploit this vulnerability, the attacker must have valid administrative credentials. Note: Manual uploading of metadata files is typical for Air-Gap environments but not for Cisco Intersight Cloud connected devices. However, the manual upload option exists for both deployments. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ndi-afw-rJuRC5dZ Security Impact Rating: Medium CVE: CVE-2026-20174

CSIRTS triage

What
A vulnerability allows an authenticated attacker to write arbitrary files to the system.
Who is affected
Authenticated users with administrative credentials on Cisco Nexus Dashboard Insights.
Urgency
Remediation is important due to the medium severity and potential for unauthorized file manipulation.
Action
Update to the latest software version released by Cisco to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Cisco Security Advisories (INTL · vendor-psirt · site)
Severity
medium
Published
2026-04-01
Exploitation
Not in CISA KEV at last sync

Original advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ndi-afw-rJuRC5dZ?vs_f=Cisco%20Security%20Advisory%26vs_cat=Security%20Intelligence%26vs_type=RSS%26vs_p=Cisco%20Nexus%20Dashboard%20Insights%20Arbitrary%20File%20Write%20Vulnerability%26vs_k=1

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-20174coverage & exploitation statusNVD · CVE.org

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