CVE-2026-8398: Daemon Tools Lite Embedded Malicious Code Vulnerability

CISA Known Exploited Vulnerabilities

Name

Daemon Tools Lite Embedded Malicious Code Vulnerability

Vendor

Daemon

Product

Daemon Tools Lite

Added to the catalog

2026-05-27

Due date for US federal agencies

2026-05-30

Weaknesses

CWE-506

Catalog version

2026.10.30

Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://blog.daemon-tools.cc/post/security-incident
• https://nvd.nist.gov/vuln/detail/CVE-2026-8398

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2026-05-15T09:16:17.653

Last modified

2026-10-26T14:10:00.130

Weaknesses

CWE-506

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.

References

• https://blog.daemon-tools.cc/post/security-incident (Vendor Advisory)
• https://securelist.com/tr/daemon-tools-backdoor/119654/ (Exploit, Third Party Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:31.494Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-8398

CVE record

Assigner

Kaspersky

State

PUBLISHED

Published

2026-05-15T07:30:29.287Z

Updated

2026-05-28T03:55:20.809Z

Problem types

CWE-506: Embedded Malicious Code

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.

References

• DAEMON Tools software infected – supply chain attack ongoing since April 8, 2026
• Security Incident Affecting DAEMON Tools Lite: What We Know So Far

Read on 2026-11-03T02:21:20.316Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8398.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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