CVE-2026-8398

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Windows"], "product": "DAEMON Tools Lite", "vendor": "AVB Disc Soft", "versions": [{"lessThan": "12.6.0.*", "status": "affected", "version": "12.5.0.2421", "versionType": "semver"}]}], "source": "vulnerability@kaspersky.com"}], "cisaActionDue": "2026-05-30", "cisaExploitAdd": "2026-05-27", "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Daemon Tools Lite Embedded Malicious Code Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:disc-soft:daemon_tools:12.5.1:*:*:*:lite:*:*:*", "matchCriteriaId": "F291E275-397E-40E4-8ABD-292B16A8C90E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421 through 12.5.0.2434), distributed from the legitimate website daemon-tools.cc between approximately April 8, 2026, and May 5, 2026. Attackers gained unauthorized access to the vendor's (AVB Disc Soft) build or distribution infrastructure and trojanized three binaries: DTHelper.exe, DiscSoftBusServiceLite.exe, and DTShellHlp.exe. These files were digitally signed with the legitimate AVB Disc Soft code-signing certificate, allowing the malicious installers to appear trustworthy and bypass signature-based detection."}, {"lang": "es", "value": "Un ataque a la cadena de suministro comprometi\u00f3 los paquetes de instalaci\u00f3n oficiales de DAEMON Tools Lite (versiones de Windows 12.5.0.2421 a 12.5.0.2434), distribuidos desde el sitio web leg\u00edtimo daemon-tools.cc entre aproximadamente el 8 de abril de 2026 y el 5 de mayo de 2026. Los atacantes obtuvieron acceso no autorizado a la infraestructura de compilaci\u00f3n o distribuci\u00f3n del proveedor (AVB Disc Soft) y troyanizaron tres binarios: DTHelper.exe, DiscSoftBusServiceLite.exe y DTShellHlp.exe. Estos archivos fueron firmados digitalmente con el certificado de firma de c\u00f3digo leg\u00edtimo de AVB Disc Soft, lo que permiti\u00f3 que los instaladores maliciosos parecieran confiables y eludieran la detecci\u00f3n basada en firmas."}], "id": "CVE-2026-8398", "lastModified": "2026-11-11T16:17:25.553", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "vulnerability@kaspersky.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": "vulnerability@kaspersky.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8398", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-15T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-15T09:16:17.653", "references": [{"source": "vulnerability@kaspersky.com", "tags": ["Vendor Advisory"], "url": "https://blog.daemon-tools.cc/post/security-incident"}, {"source": "vulnerability@kaspersky.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://securelist.com/tr/daemon-tools-backdoor/119654/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398"}], "sourceIdentifier": "vulnerability@kaspersky.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-506"}], "source": "vulnerability@kaspersky.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[12.5.0.2421,2.6.0.*)"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "DAEMON Tools Lite", "source": "cna", "vendor": "AVB Disc Soft"}, "product": "daemon_tools", "vendor": "disc-soft"}], "created": "2026-05-15T11:15:25.886155+00:00", "updated": "2026-06-18T13:15:15.907285+00:00", "vendors": ["disc-soft", "disc-soft$PRODUCT$daemon_tools"]}