CVE-2025-20347 Cisco Nexus Dashboard Fabric Controller Unauthorized REST API Vulnerability

Medium 5.4 Published 27 Aug 2025 Updated 27 Aug 2025

Low-privileged attackers can bypass authorization to view sensitive configuration data and modify files on Cisco Nexus Dashboard devices.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-20347?

CVE-2025-20347 is a medium-severity missing authorization vulnerability in Cisco Data Center Network Manager, published on 27 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the REST API endpoints of Cisco Nexus Dashboard and Cisco Nexus Dashboard Fabric Controller (NDFC) could allow an authenticated, low-privileged, remote attacker to view sensitive information or upload and modify files on an affected device. This vulnerability exists because of missing authorization controls on some REST API endpoints. An attacker could exploit th vulnerability by sending crafted API requests to an affected endpoint. A successful exploit could allow the attacker to perform limited Administrator functions, such as accessing sensitive information regarding HTTP Proxy and NTP configurations, uploading images, and damaging image files on an affected device.

Weakness: CWE-693

Which versions are affected by CVE-2025-20347?

It affects 1 product.

Products include Cisco Nexus Dashboard.

How do I fix CVE-2025-20347?

No fix has been published for CVE-2025-20347 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-20347 being exploited?

There is no known exploitation of CVE-2025-20347 in the wild and no public exploit code.

Sources

Also known as GHSA-2cfq-jpg3-8hhw.