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.
Metrics
Affected Vendors & Products
References
History
Fri, 12 Dec 2025 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Microsoft
Microsoft windows Sandboxie-plus Sandboxie-plus sandboxie |
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| Vendors & Products |
Microsoft
Microsoft windows Sandboxie-plus Sandboxie-plus sandboxie |
Thu, 11 Dec 2025 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Sandboxie's Integer Overflow in SbieIniServer::RC4Crypt allows sandbox escape and SYSTEM compromise | |
| Weaknesses | CWE-190 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-12-11T21:15:30.685Z
Updated: 2025-12-11T21:15:30.685Z
Reserved: 2025-11-10T14:07:42.922Z
Link: CVE-2025-64721
No data.
Status : Awaiting Analysis
Published: 2025-12-11T22:15:55.653
Modified: 2025-12-12T15:17:31.973
Link: CVE-2025-64721
No data.