CVE-2026-8398
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.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since May 27, 2026
- US federal agencies must remediate it by May 30, 2026 (BOD 22-01)
- Attacked 7 days before the vulnerability was made public
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Source: CISA KEV · May 27, 2026 May 27, 2026 May 8, 2026
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| disc-soft | daemon tools | 12.5.1 |
| microsoft | windows | - |
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This product uses the NVD API but is not endorsed or certified by the NVD.