CVE-2025-40904
MEDIUMHTML injection in Smart Polling in Guardian/CMC before 26.1.0
Title source: cnaDescription
A Stored HTML Injection vulnerability was discovered in the Smart Polling functionality due to improper validation of an input parameter. An authenticated user with limited privileges can push malicious remote strategies containing HTML tags through the sync. When a victim views the affected remote strategy in the Smart Polling functionality, 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.
References (2)
Core 2
Core References
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-827968.html
Scores
CVSS v3
6.5
EPSS
0.0019
EPSS Percentile
8.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (4)
Nozomi Networks/CMC
< 26.1.0
Nozomi Networks/Guardian
< 26.1.0
nozominetworks/cmc
< 26.1.0
nozominetworks/guardian
< 26.1.0
Published
May 19, 2026
Tracked Since
May 19, 2026