High severity · published Dec 18, 2025
CVE-2025-40892
Stored Cross-Site Scripting (XSS) in Reports in Guardian/CMC before 25.5.0
8.9
CVSS
0.3%
EPSS
No
On KEV
Description
A Stored Cross-Site Scripting vulnerability was discovered in the Reports functionality due to improper validation of an input parameter. An authenticated user with report privileges can define a malicious report containing a JavaScript payload, or a victim can be socially engineered to import a malicious report template. When the victim views or imports the report, 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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
CMC · Nozomi Networks
before 25.5.0 · source: vendor, NVD
GU
Guardian · Nozomi Networks
before 25.5.0 · source: vendor, NVD
RA
Affected product
CM
CMC
Nozomi Networks
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