CVE-2021-47818Public exploit

Application crash via oversized Excluded-field input

Published Jan 16, 2026 · Updated Jan 16, 2026

Denial of service in DupTerminator 1.4.5639.37199 allows local users to crash the Windows application through the Excluded text box. The Excluded field accepts an 8,000-character string without enforcing an input-length limit, and handling that value stops the process. Exploitation requires interactive GUI access on Windows 10, and the documented consequence is limited to terminating the application.

CVSS severity4.6
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in DupTerminator 1.4.5639.37199 allows local users to crash the Windows application through the Excluded text box. The Excluded field accepts an 8,000-character string without enforcing an input-length limit, and handling that value stops the process. Exploitation requires interactive GUI access on Windows 10, and the documented consequence is limited to terminating the application.

The record

CVE
CVE-2021-47818
Published
Jan 16, 2026
Updated
Jan 16, 2026
Vendor
DupTerminator
Product
DupTerminator
Classifications
CWE-1284, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.4.5639.37199

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

DupTerminator · DupTerminatorversion=1.4.5639.37199

Published CVSS scores

4.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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No observations available

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

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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