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 boxname[34] field from request structures into WCHAR[40] stack buffers using wcscpy without verifying null termination. Because the service pipe accepts variable-length packets larger than the request structure, an attacker can fill the boxname field with non-zero data and append additional controlled wide characters after the structure. wcscpy then reads past the fixed field and overflows the destination stack buffer. The service pipe is created with a NULL DACL, allowing any local process to connect, and the unsafe copy occurs before authorization checks. 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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.3
- CVSS vector
- CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.17%
- CWE
- CWE-121, CWE-170
- Published
- 2026-05-05
- Last modified
- 2026-05-07
Affected products
- sandboxie-plus Sandboxie
Weakness type
Related vulnerabilities
- CVE-2026-86093 — IBM® Db2® federated server could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands under certain conditions
- CVE-2026-15419 — CP210x Driver Memory Corruption results in Arbitrary Code Execution
- CVE-2026-88047 — Tesseract: ReadNormProtos stack buffer overflow
- CVE-2026-42805 — A stack-based buffer overflow vulnerability exists in the Bosch Sensortec BHI385 SensorAPI (C...
- CVE-2026-42804 — A stack-based buffer overflow vulnerability exists in the Bosch Sensortec BHI360...
- CVE-2026-88289 — GV-LPC2011/LPC2211 - Multiple Pre-Authentication Stack Buffer Overflows in VLSVR Request Handlers
- CVE-2026-88287 — GV-LPC2011/LPC2211 -ONVIF Discovery Probe Scopes Stack-Frame Overflow Denial of Service
- CVE-2026-88284 — GV-LPC2011/LPC2211 - ONVIF SetUser Repeated-Element Stack-Frame Overflow Denial of Service