CVE-2025-40899
HIGHStored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0
Title source: cnaDescription
A Stored Cross-Site Scripting vulnerability was discovered in the Assets and Nodes functionality due to improper validation of an input parameter. An authenticated user with custom fields privileges can define a malicious custom field containing a JavaScript payload. When the victim views the Assets or Nodes pages, 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.
References (2)
Core 2
Core References
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-827968.html
Scores
CVSS v3
8.9
EPSS
0.0029
EPSS Percentile
20.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (2)
Nozomi Networks/CMC
< 26.0.0
Nozomi Networks/Guardian
< 26.0.0
Published
Apr 15, 2026
Tracked Since
Apr 15, 2026