Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-05-27. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: 2026-05-30. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
AVB Disc Soft / DAEMON Tools Lite
Default status: unaffected
- affected: 12.5.0.2421 to < 2.6.0.* (semver)
Fixes and workarounds
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.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.01456,
"percentile": 0.73865
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.01456,
"percentile": 0.73712
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.01456,
"percentile": 0.7368
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.01456,
"percentile": 0.73668
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.01456,
"percentile": 0.73651
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.01456,
"percentile": 0.73612
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.01456,
"percentile": 0.73589
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.01456,
"percentile": 0.73569
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.01456,
"percentile": 0.73526
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.01456,
"percentile": 0.73494
}03 Nov 2026, 02:22 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8398",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-15T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-05-27",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T03:55:20.809Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-27T00:00:00.000Z",
"value": "CVE-2026-8398 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows"
],
"product": "DAEMON Tools Lite",
"vendor": "AVB Disc Soft",
"versions": [
{
"lessThan": "2.6.0.*",
"status": "affected",
"version": "12.5.0.2421",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Igor Kuznetsov (Kaspersky)"
},
{
"lang": "en",
"type": "finder",
"value": "Georgy Kucherin (Kaspersky)"
},
{
"lang": "en",
"type": "finder",
"value": "Leonid Bezvershenko (Kaspersky)"
},
{
"lang": "en",
"type": "finder",
"value": "Anton Kargin (Kaspersky)"
}
],
"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."
}
],
"metrics": [
{
"cvssV3_1": {
"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"
},
"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"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-506",
"description": "CWE-506: Embedded Malicious Code",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-15T07:30:29.287Z",
"orgId": "e45d732a-8f6b-4b6b-be76-7420f6a2b988",
"shortName": "Kaspersky"
},
"references": [
{
"name": "DAEMON Tools software infected – supply chain attack ongoing since April 8, 2026",
"tags": [
"technical-description",
"third-party-advisory"
],
"url": "https://securelist.com/tr/daemon-tools-backdoor/119654/"
},
{
"name": "Security Incident Affecting DAEMON Tools Lite: What We Know So Far",
"tags": [
"vendor-advisory"
],
"url": "https://blog.daemon-tools.cc/post/security-incident"
}
],
"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": [
{
"lang": "en",
"time": "2026-05-06T00:00:00.000Z",
"value": "Advisory published by vendor"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "e45d732a-8f6b-4b6b-be76-7420f6a2b988",
"assignerShortName": "Kaspersky",
"cveId": "CVE-2026-8398",
"datePublished": "2026-05-15T07:30:29.287Z",
"dateReserved": "2026-05-12T13:20:16.358Z",
"dateUpdated": "2026-05-28T03:55:20.809Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-8398",
"cwes": [
"CWE-506"
],
"dateAdded": "2026-05-27",
"dueDate": "2026-05-30",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://blog.daemon-tools.cc/post/security-incident ; https://nvd.nist.gov/vuln/detail/CVE-2026-8398",
"product": "Daemon Tools Lite",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.",
"vendorProject": "Daemon",
"vulnerabilityName": "Daemon Tools Lite Embedded Malicious Code Vulnerability"
}