CVE-2026-34527

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, SbieIniServer::HashPassword converts a SHA-1 digest to hexadecimal incorrectly. The high nibble of each byte is shifted right by 8 instead of 4, which always produces zero for an 8-bit...

CVE-2026-34527

CVE-2026-34527 affects Sandboxie-Plus for Windows (versions 1.17.2 and earlier). The vulnerability arises in SbieIniServer::HashPassword, where the high nibble of each SHA-1 digest byte is extracted incorrectly (shifted by 8 instead of 4). This causes the stored EditPassword hash to preserve only...

CVE-2026-34527 Sandboxie-Plus EditPassword hash entropy reduced from 160 bits to 80 bits due to incorrect nibble extraction

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, SbieIniServer::HashPassword converts a SHA-1 digest to hexadecimal incorrectly. The high nibble of each byte is shifted right by 8 instead of 4, which always produces zero for an 8-bit...

CVE-2026-34464 Sandboxie-Plus NamedPipeServer OpenHandler stack overflow via unterminated server field

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field from NAMEDPIPEOPENREQ into a fixed WCHAR pipename160 stack buffer using wcscat without verifying null termination. The handler only...

CVE-2026-34464 Sandboxie-Plus NamedPipeServer OpenHandler stack overflow via unterminated server field

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field from NAMEDPIPEOPENREQ into a fixed WCHAR pipename160 stack buffer using wcscat without verifying null termination. The handler only...

CVE-2026-34464

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field from NAMEDPIPEOPENREQ into a fixed WCHAR pipename160 stack buffer using wcscat without verifying null termination. The handler only...

CVE-2026-34464

Summary (CVE-2026-34464): Sandboxie-Plus

EUVD-2026-27464

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, NamedPipeServer::OpenHandler copies the server field from NAMEDPIPEOPENREQ into a fixed WCHAR pipename160 stack buffer using wcscat without verifying null termination. The handler only...

CVE-2026-34462 Sandboxie-Plus ProcessServer boxname stack buffer overflows via unterminated wide string copy

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, several ProcessServer handlers KillAllHandler, SuspendAllHandler, and RunSandboxedHandler copy a WCHAR boxname34 field from request structures into WCHAR40 stack buffers using wcscpy...

CVE-2026-34462

Sandboxie-Plus (Windows) versions ≤ 1.17.2 are affected by a stack-based overflow in ProcessServer handlers KillAllHandler, SuspendAllHandler, and RunSandboxedHandler due to copying a WCHAR boxname[34] into a WCHAR[40] buffer with wcscpy without verifying termination. The service pipe allows conn...

EUVD-2026-27462

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, several ProcessServer handlers KillAllHandler, SuspendAllHandler, and RunSandboxedHandler copy a WCHAR boxname34 field from request structures into WCHAR40 stack buffers using wcscpy...

CVE-2026-34462

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, several ProcessServer handlers KillAllHandler, SuspendAllHandler, and RunSandboxedHandler copy a WCHAR boxname34 field from request structures into WCHAR40 stack buffers using wcscpy...

CVE-2026-34462 Sandboxie-Plus ProcessServer boxname stack buffer overflows via unterminated wide string copy

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, several ProcessServer handlers KillAllHandler, SuspendAllHandler, and RunSandboxedHandler copy a WCHAR boxname34 field from request structures into WCHAR40 stack buffers using wcscpy...

CVE-2026-34461 Sandboxie-Plus SbieIniServer RunSbieCtrl stack buffer overflow allows local privilege escalation

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGIDSBIEINIRUNSBIECTRL message is handled before normal sandbox and impersonation checks, and for non-sandbox...

CVE-2026-34461 Sandboxie-Plus SbieIniServer RunSbieCtrl stack buffer overflow allows local privilege escalation

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGIDSBIEINIRUNSBIECTRL message is handled before normal sandbox and impersonation checks, and for non-sandbox...

CVE-2026-34461 Sandboxie-Plus SbieIniServer RunSbieCtrl stack buffer overflow allows local privilege escalation

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGIDSBIEINIRUNSBIECTRL message is handled before normal sandbox and impersonation checks, and for non-sandbox...

CVE-2026-34461

Sandboxie-Plus

CVE-2026-34461

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGIDSBIEINIRUNSBIECTRL message is handled before normal sandbox and impersonation checks, and for non-sandbox...

EUVD-2026-27458

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieSvc proxy service's GetRawInputDeviceInfoSlave handler contains two vulnerabilities that can be chained for sandbox escape. First, when a sandboxed process sends an IPC request...

CVE-2026-34459 Sandboxie-Plus sandbox escape via uninitialized memory leak and stack overflow in GetRawInputDeviceInfoSlave

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieSvc proxy service's GetRawInputDeviceInfoSlave handler contains two vulnerabilities that can be chained for sandbox escape. First, when a sandboxed process sends an IPC request...