{"id":"CVE-2026-8398","state":"PUBLISHED","title":"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 websit","description":"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.","publishedAt":"2026-05-15T07:30:29.287Z","updatedAt":"2026-05-28T03:55:20.809Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"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","source":"Kaspersky"},"assigner":"Kaspersky","products":["AVB Disc Soft DAEMON Tools Lite"],"affected":[{"vendor":"AVB Disc Soft","product":"DAEMON Tools Lite","defaultStatus":"unaffected","versions":[{"version":"12.5.0.2421","status":"affected","lessThan":"2.6.0.*","versionType":"semver"}],"platforms":["Windows"]}],"references":["https://securelist.com/tr/daemon-tools-backdoor/119654/","https://blog.daemon-tools.cc/post/security-incident","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398"],"weaknesses":["CWE-506"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8398.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8398","state":"PUBLISHED","datePublished":"2026-05-15T07:30:29.287Z","dateUpdated":"2026-05-28T03:55:20.809Z","assignerShortName":"Kaspersky","assignerOrgId":"e45d732a-8f6b-4b6b-be76-7420f6a2b988","dateReserved":"2026-05-12T13:20:16.358Z"},"containers":{"cna":{"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."}],"affected":[{"vendor":"AVB Disc Soft","product":"DAEMON Tools Lite","defaultStatus":"unaffected","versions":[{"version":"12.5.0.2421","status":"affected","lessThan":"2.6.0.*","versionType":"semver"}],"platforms":["Windows"]}],"references":[{"url":"https://securelist.com/tr/daemon-tools-backdoor/119654/","name":"DAEMON Tools software infected – supply chain attack ongoing since April 8, 2026","tags":["technical-description","third-party-advisory"]},{"url":"https://blog.daemon-tools.cc/post/security-incident","name":"Security Incident Affecting DAEMON Tools Lite: What We Know So Far","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"baseScore":9.3,"baseSeverity":"CRITICAL","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","version":"4.0"},"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-506","lang":"en","description":"CWE-506: Embedded Malicious Code","type":"CWE"}]}],"providerMetadata":{"shortName":"Kaspersky","orgId":"e45d732a-8f6b-4b6b-be76-7420f6a2b988","dateUpdated":"2026-05-15T07:30:29.287Z"},"solutions":[{"lang":"en","value":"Users of potentially infected application are recommended to uninstall the application, run a full system scan using antivirus software with the latest version of the anti-virus databases, and install the latest version of DAEMON Tools Lite (12.6 or newer) from the official website."}],"timeline":[{"time":"2026-05-06T00:00:00.000Z","lang":"en","value":"Advisory published by vendor"}],"credits":[{"lang":"en","value":"Igor Kuznetsov (Kaspersky)","type":"finder"},{"lang":"en","value":"Georgy Kucherin (Kaspersky)","type":"finder"},{"lang":"en","value":"Leonid Bezvershenko (Kaspersky)","type":"finder"},{"lang":"en","value":"Anton Kargin (Kaspersky)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398","tags":["government-resource"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-15T00:00:00+00:00","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-8398"}}},{"other":{"type":"kev","content":{"dateAdded":"2026-05-27","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-28T03:55:20.809Z"},"timeline":[{"time":"2026-05-27T00:00:00.000Z","lang":"en","value":"CVE-2026-8398 added to CISA KEV"}]}]}}}