CVE-2026-32603: CWE-20: Improper Input Validation in sandboxie-plus Sandboxie
Sandboxie versions 1.17.2 and earlier contain a local denial of service vulnerability in the kernel driver. An unprivileged process inside a Standard Sandbox can send a malformed IOCTL to the SandboxieDriverApi device, causing a kernel crash (BSOD). This affects the Standard Sandbox configuration regardless of administrator privilege dropping, but not the Security Hardened Sandbox configuration. The issue is fixed in version 1.17.3. Users unable to update can mitigate by using the Security Hardened Sandbox configuration.
AI Analysis
Technical Summary
CVE-2026-32603 is a local denial of service vulnerability in Sandboxie (versions prior to 1.17.3) caused by improper input validation (CWE-20) in the Sandboxie kernel driver. An unprivileged process within the Standard Sandbox can send a malformed IOCTL request to the \Device\SandboxieDriverApi driver, triggering an immediate kernel crash (blue screen of death). The vulnerability affects the Standard Sandbox configuration both with and without dropped administrator privileges but does not impact the Security Hardened Sandbox configuration. The vulnerability has been addressed in Sandboxie version 1.17.3.
Potential Impact
Exploitation results in a local denial of service via a kernel crash (BSOD) on affected systems running Sandboxie versions earlier than 1.17.3. This can disrupt normal system operation for users running untrusted code inside the Standard Sandbox. The Security Hardened Sandbox configuration is not vulnerable. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Sandboxie to version 1.17.3 or later where the vulnerability is fixed. For users unable to update immediately, switching to the Security Hardened Sandbox configuration provides an effective workaround. No other mitigations are specified.
CVE-2026-32603: CWE-20: Improper Input Validation in sandboxie-plus Sandboxie
Description
Sandboxie versions 1.17.2 and earlier contain a local denial of service vulnerability in the kernel driver. An unprivileged process inside a Standard Sandbox can send a malformed IOCTL to the SandboxieDriverApi device, causing a kernel crash (BSOD). This affects the Standard Sandbox configuration regardless of administrator privilege dropping, but not the Security Hardened Sandbox configuration. The issue is fixed in version 1.17.3. Users unable to update can mitigate by using the Security Hardened Sandbox configuration.
CVSS v4.0
Score 8.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-32603 is a local denial of service vulnerability in Sandboxie (versions prior to 1.17.3) caused by improper input validation (CWE-20) in the Sandboxie kernel driver. An unprivileged process within the Standard Sandbox can send a malformed IOCTL request to the \Device\SandboxieDriverApi driver, triggering an immediate kernel crash (blue screen of death). The vulnerability affects the Standard Sandbox configuration both with and without dropped administrator privileges but does not impact the Security Hardened Sandbox configuration. The vulnerability has been addressed in Sandboxie version 1.17.3.
Potential Impact
Exploitation results in a local denial of service via a kernel crash (BSOD) on affected systems running Sandboxie versions earlier than 1.17.3. This can disrupt normal system operation for users running untrusted code inside the Standard Sandbox. The Security Hardened Sandbox configuration is not vulnerable. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Sandboxie to version 1.17.3 or later where the vulnerability is fixed. For users unable to update immediately, switching to the Security Hardened Sandbox configuration provides an effective workaround. No other mitigations are specified.
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: 5/13/2026, 3:49:32 AM
Last updated: 6/20/2026, 7:33:16 AM
Views: 72
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