Supply Chain Attack Compromises DAEMON Tools Lite 12.5.0.2421-2434
CVE-2026-8398 Published on May 15, 2026
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.
Known Exploited Vulnerability
This Daemon Tools Lite Embedded Malicious Code Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.
The following remediation steps are recommended / required by May 30, 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2026-8398 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Timeline
Advisory published by vendor
Weakness Type
Embedded Malicious Code
The application contains code that appears to be malicious in nature. Malicious flaws have acquired colorful names, including Trojan horse, trapdoor, timebomb, and logic-bomb. A developer might insert malicious code with the intent to subvert the security of an application or its host system at some time in the future. It generally refers to a program that performs a useful service but exploits rights of the program's user in a way the user does not intend.
Affected Versions
AVB Disc Soft DAEMON Tools Lite:- Version 12.5.0.2421 and below 2.6.0.* is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.