CVE-2025-34290

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Due to improper privilege handling and a time-of-check time-of-use race condition combined with symbolic link and mount point manipulation, a local authenticated attacker can coerce the service into deleting arbitrary directories with SYSTEM privileges. This can be exploited to delete protected system folders such as C:\\\\Config.msi and subsequently achieve execution as NT AUTHORITY\\\\SYSTEM via MSI rollback techniques."}, {"lang": "es", "value": "Versa SASE Client para Windows versiones lanzadas entre 7.8.7 y 7.9.4 contienen una vulnerabilidad de escalada de privilegios local en la funcionalidad de exportaci\u00f3n de registros de auditor\u00eda. El cliente comunica rutas de archivo controladas por el usuario a un servicio privilegiado, que realiza operaciones del sistema de archivos sin suplantar al usuario solicitante. Debido a un manejo inadecuado de privilegios y una condici\u00f3n de carrera de tiempo de verificaci\u00f3n y tiempo de uso combinada con la manipulaci\u00f3n de enlaces simb\u00f3licos y puntos de montaje, un atacante local autenticado puede obligar al servicio a eliminar directorios arbitrarios con privilegios de SYSTEM. Esto puede ser explotado para eliminar carpetas de sistema protegidas como C:\\\\Config.msi y posteriormente lograr la ejecuci\u00f3n como NT AUTHORITY\\\\SYSTEM a trav\u00e9s de t\u00e9cnicas de reversi\u00f3n de MSI."}], "id": "CVE-2025-34290", "lastModified": "2026-10-07T13:10:00.713", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-34290", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-12-22T16:17:13.098596Z", "version": "2.0.3"}}]}, "published": "2025-12-20T20:15:50.553", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://security-portal.versa-networks.com/emailbulletins/69421e33d03aafc8e5bdaf21"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/versa-sase-client-for-windows-arbitrary-file-deletion-leading-to-lpe"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-250"}, {"lang": "en", "value": "CWE-367"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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{"created": "2025-12-21T21:12:22.623884+00:00", "updated": "2025-12-21T21:12:22.623910+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows", "versa-networks", "versa-networks$PRODUCT$sase_client"]}