Vulnerability · CVE-2026-8398
Daemon Tools Lite Embedded Malicious Code Vulnerability
Published May 8, 2026 · catalog updated Jun 17, 2026 · Daemon Daemon Tools Lite
Patch now
CVE-2026-8398 is in the CISA known-exploited catalog, due May 30, 2026. Confirm Daemon Daemon Tools Lite against the vendor advisory and apply that fix. The CVSS score does not change the priority.
- Severity
- Critical9.3
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 0.96%
- Remediation
- Remediation guidance
- Affected products
- cpe disc-soft/daemon tools · vendor Daemon Daemon Tools Lite
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
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- cpe disc-soft/daemon tools12.5.1
- vendor Daemon Daemon Tools Liteversion unspecified
How to fix CVE-2026-8398
Recommended remediation
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 due date May 30, 2026.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2026-8398 is in the CISA known-exploited catalog, due May 30, 2026. Confirm Daemon Daemon Tools Lite against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Which versions are affected?
Compare what you have installed with disc-soft/daemon tools 12.5.1. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What should an analyst verify?
CWE-506. EPSS 0.96%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 15, 2026 · Catalog
Detected
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.ex
May 27, 2026 · CISA KEV
Known exploited
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
May 30, 2026 · CISA KEV
Remediation due
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Jun 17, 2026 · Catalog
Updated
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.ex
Jun 17, 2026 · NIST NVD
Updated
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.ex
Sources
- CISA KEVConfirmed exploitationCVE-2026-8398
Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.
cisa.gov - CVE.orgVulnerability recordCVE-2026-8398
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-8398
30-day exploitation probability 1.0%
first.org - NIST NVDVulnerability recordCVE-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 unauthorize
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2026-8398
Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.
vulncheck.com
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.