THREAT WATCH
High Microsoft Active Directory Federation Services: CVE-2026-56155 — Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability Medium Microsoft SharePoint Server: CVE-2026-56164 — Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability Critical SonicWall SMA1000 Appliances: CVE-2026-15409 — SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability Actively Exploited SonicWall SMA1000 Appliances: CVE-2026-15410 — SonicWall SMA1000 Appliances Code Injection Vulnerability Medium Cisco IOS: CVE-2008-4128 — Cisco IOS Cross-Site Request Forgery Vulnerability Critical Balbooa Forms: CVE-2026-56291 — Balbooa Forms Unrestricted Upload of File with Dangerous Type Vulnerability Critical iCagenda iCagenda: CVE-2026-48939 — iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability Critical Joomlack Page Builder: CVE-2026-56290 — Joomlack Page Builder Improper Access Control Vulnerability High Microsoft Active Directory Federation Services: CVE-2026-56155 — Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability Medium Microsoft SharePoint Server: CVE-2026-56164 — Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability Critical SonicWall SMA1000 Appliances: CVE-2026-15409 — SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability Actively Exploited SonicWall SMA1000 Appliances: CVE-2026-15410 — SonicWall SMA1000 Appliances Code Injection Vulnerability Medium Cisco IOS: CVE-2008-4128 — Cisco IOS Cross-Site Request Forgery Vulnerability Critical Balbooa Forms: CVE-2026-56291 — Balbooa Forms Unrestricted Upload of File with Dangerous Type Vulnerability Critical iCagenda iCagenda: CVE-2026-48939 — iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability Critical Joomlack Page Builder: CVE-2026-56290 — Joomlack Page Builder Improper Access Control Vulnerability

CVE-2026-8398 — Daemon Tools Lite Embedded Malicious Code Vulnerability

Cyber Dilmeth - Simplifying Cybersecurity for Everyone > Threat Intel > CVE-2026-8398 — Daemon Tools Lite Embedded Malicious Code Vulnerability
  • Posted onMay 27, 2026
Back to Threat Intel Dashboard
Critical CVSS 9.8 Actively exploited · CISA KEV

Daemon Daemon Tools Lite

CVE-2026-8398 Added May 27, 2026 Remediation deadline has passed
TL;DR

Daemon Daemon Tools Lite is affected by a critical-severity vulnerability (CVE-2026-8398) that is confirmed to be actively exploited in the wild. 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 is this vulnerability?

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.

How it works

This is classified as CWE-506. In plain terms, an attacker could use this flaw in Daemon Tools Lite to gain access, disrupt service, or steal data — the exact impact depends on how it’s deployed in your environment.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Mitigations

  • Apply the vendor’s security patch or update as soon as it’s available and tested.
  • If no patch exists yet, apply the vendor’s temporary workaround.
  • Limit network exposure of the affected system until it’s patched.
  • Review logs for signs of prior exploitation, especially if it’s flagged for ransomware use.

Recommendations

  • Confirm whether Daemon Daemon Tools Lite is used anywhere in your environment.
  • Patch internet-facing systems first, then internal ones.
  • Set a reminder ahead of the remediation deadline so it doesn’t slip.
  • Subscribe to the vendor’s security advisories for earlier warning next time.

Compiled from public threat intelligence (CISA Known Exploited Vulnerabilities catalog and the National Vulnerability Database, referenced in 3 public advisories).