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CVE-2025-40902

HTML injection in Users in Guardian/CMC before 26.1.0

Published: May 19, 2026Updated: Jun 9, 2026 Sources: CVE List NVDCWE-79
5.9MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 90.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A Stored HTML Injection vulnerability was discovered in the Users functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can create a malicious user whose username contains HTML tags. When a victim attempts to delete a group containing the affected user, 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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

GuardianNozomi Networks
On-premSecurity Product
Security Products / vuln-mgmt-scanner
CMCNozomi Networks
On-premSecurity Product
Security Products / vuln-mgmt-scanner
cmcnozominetworks
On-premSecurity Product
Security Products / vuln-mgmt-scanner
guardiannozominetworks
On-premNetwork Device
Security Products / secure-gateway-vpn
nozomi networkscommercialSecurity Productsaka nozomi networks
nozominetworkscommercialSecurity Productsaka guardian, cmc, central management control

Exploitability

Official Patch Available
Workaround Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://security.nozominetworks.com/NN-2026:5-01
security.nozominetworks.com
https://cert-portal.siemens.com/productcert/html/ssa-827968.html
cert-portal.siemens.com

Timeline

Published
May 19, 2026
Last Updated
Jun 9, 2026

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