What’s Vulnerable › Vulnerabilities
CVE-2025-40890: Stored Cross-Site Scripting (XSS) in Dashboards in Guardian/CMC before 25.4.0
- Severity: high (CVSS 7.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-11-25 · updated 2026-10-18
- Weakness: CWE-79
Description
A Stored Cross-Site Scripting vulnerability was discovered in the Dashboards functionality due to improper validation of an input parameter. An authenticated low-privilege user can craft a malicious dashboard containing a JavaScript payload and share it with victim users, or a victim can be socially engineered to import a malicious dashboard template. When the victim views or imports the dashboard, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.
Affected products
- Nozomi Networks CMC: before 25.4.0 — fixed in 25.4.0
- Nozomi Networks Guardian: before 25.4.0 — fixed in 25.4.0
How to fix
Upgrade to a fixed version: Nozomi Networks CMC 25.4.0; Nozomi Networks Guardian 25.4.0. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2025-40890 or the next vulnerability affects your stack