CVE-2026-32603: CWE-20: Improper Input Validation in sandboxie-plus Sandboxie
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.
AI Analysis
Technical Summary
Sandboxie, an open source sandbox isolation software for Windows, contains a local denial of service vulnerability (CWE-20: Improper Input Validation) in its kernel driver in versions prior to 1.17.3. An unprivileged process running inside the Standard Sandbox can trigger a kernel crash by sending a malformed IOCTL request to the \Device\SandboxieDriverApi driver. This vulnerability does not affect the Security Hardened Sandbox configuration. The issue has been addressed in Sandboxie version 1.17.3.
Potential Impact
Exploitation of this vulnerability results in an immediate kernel crash (Blue Screen of Death) on affected systems, causing denial of service. It requires local access with low privileges inside the Standard Sandbox. There is no indication of privilege escalation or remote exploitation. The Security Hardened Sandbox configuration is not affected.
Mitigation Recommendations
A fix is available in Sandboxie version 1.17.3. Users should upgrade to this version to remediate the vulnerability. For users unable to update immediately, switching to the Security Hardened Sandbox configuration provides an effective workaround to prevent exploitation.
CVE-2026-32603: CWE-20: Improper Input Validation in sandboxie-plus Sandboxie
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Sandboxie, an open source sandbox isolation software for Windows, contains a local denial of service vulnerability (CWE-20: Improper Input Validation) in its kernel driver in versions prior to 1.17.3. An unprivileged process running inside the Standard Sandbox can trigger a kernel crash by sending a malformed IOCTL request to the \Device\SandboxieDriverApi driver. This vulnerability does not affect the Security Hardened Sandbox configuration. The issue has been addressed in Sandboxie version 1.17.3.
Potential Impact
Exploitation of this vulnerability results in an immediate kernel crash (Blue Screen of Death) on affected systems, causing denial of service. It requires local access with low privileges inside the Standard Sandbox. There is no indication of privilege escalation or remote exploitation. The Security Hardened Sandbox configuration is not affected.
Mitigation Recommendations
A fix is available in Sandboxie version 1.17.3. Users should upgrade to this version to remediate the vulnerability. For users unable to update immediately, switching to the Security Hardened Sandbox configuration provides an effective workaround to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-12T14:54:24.269Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fa46b8cbff5d86101f9ff1
Added to database: 5/5/2026, 7:36:24 PM
Last enriched: 5/5/2026, 7:51:51 PM
Last updated: 5/6/2026, 3:31:45 AM
Views: 6
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