Improper input validation in Sandboxie-Plus Sandboxie
CVE-2026-32603
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Sandboxie-Plus Sandboxie — versions < 1.17.3
Weakness classification (CWE)
References
- github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-vvf8-cf4j-v8fv (Exploit, Vendor Advisory)
- github.com/sandboxie-plus/Sandboxie/releases/tag/v1.17.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-32603?
- CVE-2026-32603 is a medium-severity vulnerability in Sandboxie-Plus Sandboxie, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-05-05.
- How severe is CVE-2026-32603?
- Medium severity. CVSS v3 base score is 6.5 out of 10.