Trending
CVE-2026-8398

CVE detail

CVE-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 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.

CVSS 9.3 · CriticalBuzz score 61.1KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 61.1

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 16.1 · diversity 20.0 · KEV 25.0 · OTX 0.0 · PoC 0.0

Mention score

16.1

4 evidence mentions in the snapshot

Diversity score

20.0

4 sources across 4 categories

KEV score

25.0

Known exploited vulnerability present

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

4 source links · newest first

U.S. CISA adds Daemon Tools, TanStack, and Nx Console flaws to its Known Exploited Vulnerabilities catalogSecurity Affairs
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Daemon Tools, TanStack, and Nx Console flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Windows Shell and ConnectWise ScreenConnect flaws to its Known Exploited Vulnerabilities (KEV) catalog. Below are the flaws added to the catalog: The first flaw, tracked as CVE-2026-8398, […]
newssecurityaffairs.comMay 28, 2026, 1:14 PM
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398www.cisa.gov
No excerpt available.
Mitigationwww.cisa.govMay 15, 2026, 9:16 AM
https://securelist.com/tr/daemon-tools-backdoor/119654/securelist.com
No excerpt available.
Exploitsecurelist.comMay 15, 2026, 9:16 AM
https://blog.daemon-tools.cc/post/security-incidentblog.daemon-tools.cc
No excerpt available.
Vendor Advisoryblog.daemon-tools.ccMay 15, 2026, 9:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-8398.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:disc-soft:daemon_toolsSearch this product on Shodan
cpe:2.3:o:microsoft:windowsSearch this product on Shodan

Exact CVE query

Eligible paid Shodan plan required

Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2026-8398Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Analyzed

Published

May 15, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:4.0/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

CWE IDs

Vendor classifications

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require a targeted user to act.
Vulnerable System Confidentiality (VC): High. There is a total or serious impact to this security property.
Vulnerable System Integrity (VI): High. There is a total or serious impact to this security property.
Vulnerable System Availability (VA): High. There is a total or serious impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

1 stored signals · KEV present · 0 OTX pulses

KEVKEV
- cwes: CWE-506
- dueDate: 2026-05-30
- knownRansomwareCampaignUse: Unknown
- notes: https://blog.daemon-tools.cc/post/security-incident ; https://nvd.nist.gov/vuln/detail/CVE-2026-8398
- product: Daemon Tools Lite
- requiredAction: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- shortDescription: Daemon Tools contains an unspecified vulnerability that has a high impact on confidentiality, integrity, and availability.
- vendorProject: Daemon
- vulnerabilityName: Daemon Tools Lite Embedded Malicious Code Vulnerability
Observed May 27, 2026, 12:00 AM