CVE Watch24 jul 2026

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

CVSS

7.8

Alto

EPSS

0.2%

KEV

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Exploit Today

0-100

Publicado: 5 may 2026 · Última mod.: 24 jul 2026 · CWE-121

EPSS · 30d

0.2%EPSS · 30 días0.2%

2026-07-062026-08-02

Descripción técnica

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 MSGID_SBIE_INI_RUN_SBIE_CTRL message is handled before normal sandbox and impersonation checks, and for non-sandboxed callers, the handler copies the trailing message payload into a fixed-size WCHAR ctrlCmd[128] stack buffer using memcpy without verifying the length fits within the buffer. The service pipe is created with a NULL DACL, allowing any local interactive process to connect and send an oversized payload to overflow the stack. This can lead to a crash of the SbieSvc service or potential code execution as SYSTEM. This issue has been fixed in version 1.17.3.

Referencias oficiales

github.comhttps://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-wpjw-jh2p-gwx7

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