Actively exploited · Published May 15, 2026 · Assigned by Kaspersky
CVE-2026-8398
Critical 9.8 Exploited
In plain English
A critical-severity security flaw in DAEMON Tools Lite from AVB Disc Soft. Attackers are actively exploiting it in the wild (listed by CISA on May 27, 2026). The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). 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 guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by May 30, 2026.
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AVB Disc Soft | DAEMON Tools Lite | 12.5.0.2421 – before 2.6.0.* |
Weakness: CWE-506 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- DAEMON Tools software infected – supply chain attack ongoing since April 8, 2026 technical-description, third-party-advisory
- Security Incident Affecting DAEMON Tools Lite: What We Know So Far vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398 government-resource