CVE-2025-40893
HTML injection in Asset List in Guardian/CMC before 25.5.0
CVSS Score
6.1
EPSS Score
0.1%
EPSS Percentile
17th
A Stored HTML Injection vulnerability was discovered in the Asset List functionality due to improper validation of network traffic data. An unauthenticated attacker can send specially crafted network packets to inject HTML tags into asset attributes. When a victim views the affected assets in the Asset List (and similar functions), 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.
| CWE | CWE-79 |
| Vendor | nozomi networks |
| Product | guardian |
| Published | Dec 18, 2025 |
| Last Updated | Apr 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Nozomi Networks / Guardian
0 < 25.5.0
Nozomi Networks / CMC
0 < 25.5.0
References
Credits
This issue was found by Stefano Libero of Nozomi Networks Product Security team during an internal investigation.