What is CVE-2025-40902?

CVE-2025-40902 is a medium-severity vulnerability in Nozomi Networks Cmc, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-05-19.

How severe is CVE-2025-40902?

Medium severity. CVSS v3 base score is 5.9 out of 10.

XSS in Nozomi Networks Cmc

CVE-2025-40902

A Stored HTML Injection vulnerability was discovered in the Users functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can create a malicious user whose username contains HTML…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (8.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

Affected products

Nozomi Networks Cmc — versions 0
Nozomi Networks Guardian — versions 0
Nozominetworks Cmc
Nozominetworks Guardian

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

prodsec@nozominetworks.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-40902?: CVE-2025-40902 is a medium-severity vulnerability in Nozomi Networks Cmc, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-05-19.
How severe is CVE-2025-40902?: Medium severity. CVSS v3 base score is 5.9 out of 10.