NN-2025:14-01
HTML injection in Asset List in Guardian/CMC before 25.5.0
Last update: 2025-12-18
| Advisory ID | NN-2025:14-01 |
|---|---|
| Topic | HTML injection in Asset List in Guardian/CMC before 25.5.0 |
| CWE Impact | CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
| Issue date | 2025-12-18 |
| Affects | Guardian, CMC < v25.5.0 |
| CVE Name(s) | CVE-2025-40893 |
| CVSS Details | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CVSS Score | 5.3 (CVSS v4.0) 6.1 (CVSS v3.1) |
| CVE Risk Level | Medium (CVSS v4.0) Medium (CVSS v3.1) |
| Risk Level for Nozomi customers | Medium |
Summary
A Stored HTML Injection vulnerability was discovered in the Asset List functionality due to improper validation of network traffic data.
Impact
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.
Affected Products
Guardian, CMC < v25.5.0
Workarounds and Mitigations
N/A
Solutions
Upgrade to v25.5.0 or later.
Modification History
2025-12-18: Initial revision
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Stefano Libero of Nozomi Networks Product Security team for finding this issue during an internal investigation
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.