🛡️ CVE-2025-64721
🔴 CVSS 10.0 — Critical ⚠️ Exploit Public CWE-190 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions 1.16.6 and below, the SYSTEM-level service SbieSvc.exe exposes SbieIniServer::RC4Crypt to sandboxed processes. The handler adds a fixed header size to a caller-controlled value_len without overflow checking. A large value_len (e.g., 0xFFFFFFF0) wraps the allocation size, causing a heap overflow when attacker data is copied into the undersized buffer. This allows sandboxed processes to execute arbitrary code as SYSTEM, fully compromising the host. This issue is fixed in version 1.16.7.

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-190
Public Exploit ⚠️ Yes
Source NVD
Published 2025-12-11
Updated 2026-06-02
Modified 2025-12-22

Affected Packages

Software From version Fixed in
sandboxie 1.14.0 1.16.7

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