๐Ÿ›ก๏ธ CVE-2026-34596
๐ŸŸ  CVSS 7.0 โ€” High โš ๏ธ Exploit Public CWE-367 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, a Time-of-Check-to-Time-of-Use (TOCTOU) race condition exists during addon installation. When a user installs an addon through the SandMan interface, UpdUtil.exe is spawned as SYSTEM by SbieSvc but stages files in the user-writable %TEMP%\sandboxie-updater directory. After UpdUtil verifies file hashes against the signed addon manifest, install.bat extracts files.cab and executes config.exe from its contents. Between hash verification and extraction, an unprivileged user can replace files.cab with a crafted cabinet containing a malicious executable, which is then run as SYSTEM. No UAC prompt is required. This issue has been fixed in version 1.17.3.

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-367
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-05-05
Updated 2026-06-02
Modified 2026-05-07
Fix URL N/A

Affected Packages

Software From version Fixed in
sandboxie โ€” 1.17.3

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