CVE-2026-8398

9.8 CRITICAL

A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421 through 12.5.0.24...

Published: 2026-05-15 · Last updated: 2026-05-28

Severity and scoring

CVSS: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-506

Affected products

Vendor	Product
disc-soft	daemon_tools

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8398
[Vendor advisory]https://blog.daemon-tools.cc/post/security-incident
[Exploit reference]https://securelist.com/tr/daemon-tools-backdoor/119654/
[Other]https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398

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