CVE-2021-47831: Sandboxie-Plus Sandboxie

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

Sandboxie 5.49.7 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the container folder input field. Attackers can paste a large buffer of repeated characters into the Sandbox container folder setting to trigger an application crash.

Affected products

• Sandboxie-Plus Sandboxie: version 5.49.7 only

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