Vulnerability · Published May 5, 2026 · Assigned by GitHub_M
CVE-2026-32603Sandboxie kernel driver denial of service via malformed IOCTL from sandboxed process
High 8.2
In plain English
A high-severity improper input validation in Sandboxie from sandboxie-plus. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Official description
Sandboxie is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, a local denial of service vulnerability exists in the Sandboxie kernel driver. An unprivileged process running inside a Standard Sandbox can send a malformed IOCTL to the \Device\SandboxieDriverApi driver, triggering an immediate kernel crash (BSOD). The vulnerability affects the Standard Sandbox configuration both with and without dropped administrator privileges, but does not affect the Security Hardened Sandbox configuration. This issue has been fixed in version 1.17.3. Users who cannot update can use the Security Hardened Sandbox configuration as a workaround.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sandboxie-plus | Sandboxie | < 1.17.3 |
Weakness: CWE-20 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
References
- https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-vvf8-cf4j-v8fv x_refsource_CONFIRM
- https://github.com/sandboxie-plus/Sandboxie/releases/tag/v1.17.3 x_refsource_MISC