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High 7.9Published Nov 25, 2025

CVE-2025-40890Stored Cross-Site Scripting (XSS) in Dashboards in Guardian/CMC before 25.4.0

Updated under an hour ago ()

Does this affect you?

It affects Nozomi Networks Guardian and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
7.9 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:H
Weakness (CWE)
CWE-79
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Nozomi
NVD analysis
Deferred
Record last updated
Nov 26, 2025
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Nozomi Networks Guardian
nozomi_networks:guardian (from the name)
before 25.4.0
CNA record
Nozomi Networks CMC
nozomi_networks:cmc (from the name)
before 25.4.0
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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