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 tags. When a victim attempts to delete a group containing the affected user, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (8.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Nozomi Networks Cmc — versions 0
- Nozomi Networks Guardian — versions 0
- Nozominetworks Cmc
- Nozominetworks Guardian
Weakness classification (CWE)
References
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.