What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-05-27
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-15 · updated 2026-10-26
• Weakness: CWE-506

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.

Affected products

• AVB Disc Soft DAEMON Tools Lite: 12.5.1

References

• https://blog.daemon-tools.cc/post/security-incident
• https://securelist.com/tr/daemon-tools-backdoor/119654/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398

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