CVE-2025-40903

A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected schedule, 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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://security.nozominetworks.com/NN-2026:6-01	Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-827968.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nozominetworks:cmc::::::::
	cpe:2.3:a:nozominetworks:guardian::::::::

History

14 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de inyección HTML almacenada fue descubierta en la funcionalidad de Programar Restauración de Archivo debido a una validación de entrada incorrecta de un parámetro de entrada. Un usuario autenticado con privilegios administrativos puede definir una programación de restauración maliciosa que contiene etiquetas HTML. Cuando una víctima visualiza la programación afectada, el HTML inyectado se renderiza en su navegador, lo que permite ataques de phishing y posiblemente de redirección abierta. La explotación completa de XSS y la revelación de información directa se evitan gracias a la validación de entrada existente y la configuración de la Política de Seguridad de Contenido.

Information

Published : 2026-05-19 14:16

Updated : 2026-10-14 13:10

NVD link : CVE-2025-40903

Mitre link : CVE-2025-40903

CVE.ORG link : CVE-2025-40903

JSON object : View

Products Affected

nozominetworks

guardian
cmc

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2025-40903", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-40903", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-19T13:58:03.055058Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "prodsec@nozominetworks.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 3.7, "exploitabilityScore": 1.7}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 1.7}], "cvssMetricV40": [{"type": "Secondary", "source": "prodsec@nozominetworks.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 4.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "prodsec@nozominetworks.com", "affectedData": [{"vendor": "Nozomi Networks", "product": "Guardian", "versions": [{"status": "affected", "version": "0", "lessThan": "26.1.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Nozomi Networks", "product": "CMC", "versions": [{"status": "affected", "version": "0", "lessThan": "26.1.0", "versionType": "semver"}], "defaultStatus": "unaffected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "RUGGEDCOM APE1808", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-05-19T14:16:28.130", "references": [{"url": "https://security.nozominetworks.com/NN-2026:6-01", "tags": ["Vendor Advisory"], "source": "prodsec@nozominetworks.com"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-827968.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "prodsec@nozominetworks.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected schedule, 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."}, {"lang": "es", "value": "Una vulnerabilidad de inyecci\u00f3n HTML almacenada fue descubierta en la funcionalidad de Programar Restauraci\u00f3n de Archivo debido a una validaci\u00f3n de entrada incorrecta de un par\u00e1metro de entrada. Un usuario autenticado con privilegios administrativos puede definir una programaci\u00f3n de restauraci\u00f3n maliciosa que contiene etiquetas HTML. Cuando una v\u00edctima visualiza la programaci\u00f3n afectada, el HTML inyectado se renderiza en su navegador, lo que permite ataques de phishing y posiblemente de redirecci\u00f3n abierta. La explotaci\u00f3n completa de XSS y la revelaci\u00f3n de informaci\u00f3n directa se evitan gracias a la validaci\u00f3n de entrada existente y la configuraci\u00f3n de la Pol\u00edtica de Seguridad de Contenido."}], "lastModified": "2026-10-14T13:10:00.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nozominetworks:cmc:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ADDB8845-2325-4017-82B0-96F27B254E0C", "versionEndExcluding": "26.1.0"}, {"criteria": "cpe:2.3:a:nozominetworks:guardian:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "643606B0-7E60-440E-9A83-A8EC6534F5CB", "versionEndExcluding": "26.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "prodsec@nozominetworks.com"}