Critical severity9.8CISA KEVNVD Advisory· Published May 15, 2026· Updated May 28, 2026
CVE-2026-8398
CVE-2026-8398
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- cpe:2.3:a:disc-soft:daemon_tools:12.5.1:*:*:*:lite:*:*:*
- Range: >=12.5.0.2421,<=12.5.0.2434
Patches
Vulnerability mechanics
References
3- securelist.com/tr/daemon-tools-backdoor/119654/nvdExploitThird Party Advisory
- blog.daemon-tools.cc/post/security-incidentnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
2- ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 MoreThe Hacker News · May 28, 2026
- CISA Adds Three Known Exploited Vulnerabilities to CatalogCISA Alerts