CVE-2025-40902 Details

A stored HTML injection vulnerability has been identified in the Users functionality of Nozomi Networks Guardian and CMC versions prior to 26.1.0. This vulnerability arises from inadequate validation of input parameters, allowing an authenticated user with administrative privileges to create a user with a username that includes HTML tags. When another user attempts to delete a group containing the manipulated user, the injected HTML is executed in their browser. This could lead to phishing attacks and potentially allow open redirects. However, full exploitation of cross-site scripting and direct information disclosure is blocked by current input validation and Content Security Policy settings.

Users are advised to upgrade to version 26.1.0 or later. Additionally, it is recommended to use internal firewall features to restrict access to the web management interface, review accounts with administrative privileges, and delete any unnecessary accounts. Existing usernames should also be reviewed for potential exploitation.