Security readout for executives and security teams
Plain-English summary
CVE-2021-47818 affects DupTerminator 1.4.5639.37199. A specially long value entered in the Excluded text box can crash the application on Windows 10. The known impact is application availability only, not data theft or system takeover.
Executive priority
Treat as a targeted availability risk for a niche desktop tool. Prioritize if DupTerminator supports operational workflows; otherwise handle through normal endpoint software hygiene and removal of unused software.
Technical view
The issue is described as improper input validation, CWE-1284, in DupTerminator’s Excluded text box. Sources assign CVSS 3.1 score 7.5 with availability impact only. The affected product/version named in the sources is DupTerminator 1.4.5639.37199.
Likely exposure
Exposure is likely limited to systems where DupTerminator 1.4.5639.37199 is installed and used. Sources do not show this as an internet-facing service. Validate especially Windows 10 endpoints using this version.
Exploitation context
A public Exploit-DB entry exists, but CISA KEV is false and the provided sources do not claim active exploitation. The reported outcome is application crash, not code execution, privilege escalation, or data compromise.
Researcher notes
Evidence is specific to version 1.4.5639.37199. Patch status is not provided in the source bundle. The CVSS vector says network attack, while the description centers on GUI input, so validate practical attack surface before escalation.
Mitigation direction
- Inventory endpoints for DupTerminator 1.4.5639.37199.
- Check the project page and advisory sources for vendor update guidance.
- Remove the application if it is no longer business-required.
- Limit who can use or configure the application.
- Avoid entering or accepting oversized untrusted Excluded-field values.
Validation and detection
- Confirm installed DupTerminator versions on managed endpoints.
- Check Windows application logs for DupTerminator crashes.
- Validate behavior only in a controlled test environment.
- Document whether DupTerminator supports any business-critical workflow.
- Track vendor or advisory updates for fixed-version information.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-1284: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-47818 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49917CVE reference · exploit
- DupTerminator Project HomepageCVE reference · product
- VulnCheck Advisory: DupTerminator 1.4.5639.37199 - Denial of ServiceCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Validation of Specified Quantity in Input
Improper Validation of Specified Quantity in Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.