CVE-2026-8398Known exploitationNetwork attack vector

Command execution via trojanized startup binaries

Published May 15, 2026 · Updated May 15, 2026

Embedded malicious code in AVB Disc Soft DAEMON Tools Lite 12.5.0.2421 through 12.5.0.2434 allows attackers to execute commands. The startup code in DTHelper.exe, DiscSoftBusServiceLite.exe, and DTShellHlp.exe starts a thread that sends the host name to a lookalike command server and executes returned shell commands through cmd.exe. Installing an affected free package is sufficient; the backdoor profiles Windows hosts and selectively downloads and runs additional payloads.

CVSS severity9.3
Critical
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Embedded malicious code in AVB Disc Soft DAEMON Tools Lite 12.5.0.2421 through 12.5.0.2434 allows attackers to execute commands. The startup code in DTHelper.exe, DiscSoftBusServiceLite.exe, and DTShellHlp.exe starts a thread that sends the host name to a lookalike command server and executes returned shell commands through cmd.exe. Installing an affected free package is sufficient; the backdoor profiles Windows hosts and selectively downloads and runs additional payloads.

The record

CVE
CVE-2026-8398
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Disc Soft
Product
DAEMON Tools Lite
Classifications
CWE-506, T1059.001, T1105, T1059.003, T1195.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2026Exploitation reportedKaspersky observed DAEMON Tools supply-chain infections
  2. May 15, 2026CVE publishedPublication date reported by the CVE source.
  3. May 15, 2026Record updatedLatest update available in the CVE record.
  4. May 27, 2026Exploitation reportedCISA Known Exploited Vulnerabilities Catalog entry

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.5.0.2421 <2.6.0.*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Disc Soft · DAEMON Tools Liteversion=12.5.0.2421 <2.6.0.*

Published CVSS scores

9.8Kaspersky LabsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3Kaspersky LabsCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-506Embedded Malicious Code
T1059.001PowerShell
T1105Ingress Tool Transfer
T1059.003Windows Command Shell
T1195.002Compromise Software Supply Chain

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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