CVE-2026-8398
Daemon Tools Lite Embedded Malicious Code Vulnerability - [Actively Exploited]
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.
INFO
Published Date :
May 15, 2026, 9:16 a.m.
Last Modified :
May 28, 2026, 12:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Unknown
https://blog.daemon-tools.cc/post/security-incident ; https://nvd.nist.gov/vuln/detail/CVE-2026-8398
Affected Products
The following products are affected by CVE-2026-8398
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | e45d732a-8f6b-4b6b-be76-7420f6a2b988 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | e45d732a-8f6b-4b6b-be76-7420f6a2b988 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Uninstall affected DAEMON Tools Lite versions immediately.
- Obtain clean installation packages from a verified source.
- Scan systems for any signs of compromise.
- Monitor for further suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8398.
| URL | Resource |
|---|---|
| https://blog.daemon-tools.cc/post/security-incident | Vendor Advisory |
| https://securelist.com/tr/daemon-tools-backdoor/119654/ | Exploit Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8398 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8398
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8398 vulnerability anywhere in the article.
-
The Hacker News
ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More
Every time you think the industry has finally stopped doing some reckless, low-effort crap, somebody spins up a fresh box full of sketchy loaders, fake installers, recycled social-engineering bait, an ... Read more
-
TheCyberThrone
CISA adds Three Vulnerabilities to KEV Catalog
May 28, 2026OverviewCISA has added three new vulnerabilities to its Known Exploited Vulnerabilities catalog:CVE-2026-8398 (Daemon Tools Lite Embedded Malicious Code)CVE-2026-45321 (TanStack Unspecifie ... Read more
-
Daily CyberSecurity
CVSS 10 Alert: Quest KACE SMA Auth Bypass Exploited to Hijack Managed Endpoints
Detailed listing of tools and scripts within the exposed C2 directory | Image: Hunt Cybersecurity researchers have just dropped a report on a critical “management plane” threat that has spent the last ... Read more
The following table lists the changes that have been made to the
CVE-2026-8398 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 28, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:a:disc-soft:daemon_tools:12.5.1:*:*:*:lite:*:*:* OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Added Reference Type Kaspersky Labs: https://blog.daemon-tools.cc/post/security-incident Types: Vendor Advisory Added Reference Type Kaspersky Labs: https://securelist.com/tr/daemon-tools-backdoor/119654/ Types: Exploit, Third Party Advisory Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 27, 2026
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398 -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
May. 27, 2026
Action Type Old Value New Value Added Date Added 2026-05-27 Added Due Date 2026-05-27 Added Required Action 2026-05-27 Added Vulnerability Name 2026-05-27 -
New CVE Received by [email protected]
May. 15, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-506 Added Reference https://blog.daemon-tools.cc/post/security-incident Added Reference https://securelist.com/tr/daemon-tools-backdoor/119654/