CVE-2021-47818: Dupterminator

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

DupTerminator 1.4.5639.37199 contains a denial of service vulnerability that allows attackers to crash the application by inputting a long character string in the Excluded text box. Attackers can generate a payload of 8000 repeated characters to trigger the application to stop working on Windows 10.

Affected products

• Dupterminator Dupterminator: version 1.4.5639.37199 only

Published 2026-01-16. Last modified 2026-06-17.