CVE-2025-20216 Cisco Catalyst SD-WAN Manager Reflected HTML Injection Vulnerability

Medium 4.7 Published 7 May 2025 Updated 7 May 2025

An unauthenticated attacker can inject HTML into the browser of an authenticated Cisco Catalyst SD-WAN Manager user via a malicious link.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-20216?

CVE-2025-20216 is a medium-severity cross-site scripting vulnerability in Cisco Catalyst Sd-Wan Manager, published on 7 May 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in the web interface of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an unauthenticated, remote attacker to inject HTML into the browser of an authenticated user. This vulnerability is due to improper sanitization of input to the web interface. An attacker could exploit this vulnerability by convincing an authenticated user to click a malicious link. A successful exploit could allow the attacker to inject HTML into the browser of an authenticated Cisco Catalyst SD-WAN Manager user.

Weakness: CWE-74

Which versions are affected by CVE-2025-20216?

It affects 1 product.

Products include Cisco Catalyst Sd-Wan Manager.

How do I fix CVE-2025-20216?

No fix has been published for CVE-2025-20216 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-20216 being exploited?

There is no known exploitation of CVE-2025-20216 in the wild and no public exploit code.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-8w25-4r69-mq7p.