CVE-2026-20108

Medium

Description

A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

SeverityMedium
CVSS5.4
Exploit probability6. percentile0.2%
ProductCisco Catalyst Sd-wan Manager
PublishedMar 25, 2026
First seenMar 25, 2026

How to fix

Update
  • cisco catalyst_sd-wan_manager20.12.5.3, 20.15.4.2, 20.18.2.1 or later

Affected products

ProductAffected versionsFixed in
cisco catalyst_sd-wan_manager20.12 ≤ v < 20.12.5.3, 20.13 ≤ v < 20.15.4.2, 20.16 ≤ v < 20.18.2.1, 20.12.620.12.5.3, 20.15.4.2, 20.18.2.1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.