CVE-2021-47831 Sandboxie 5.49.7 - Denial of Service
Attackers can crash Sandboxie by pasting a large buffer into the container folder setting, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47831?
CVE-2021-47831 is a medium-severity denial of service vulnerability in Sandboxie-Plus Sandboxie, published on 16 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-1284
Which versions are affected by CVE-2021-47831?
How do I fix CVE-2021-47831?
No fix has been published for CVE-2021-47831 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-47831 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47831 exists.
Sources
Also known as GHSA-j52p-j9xv-w569.