cvedb.io
CVE-2025-64721
CRITICAL · CVSS 10
EPSS exploitation probability: 0%
Published 2025-12-11T22:15:55.653 · Last modified 2026-06-17T09:55:06.350

Summary

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.

Affected products

sandboxie-plus — sandboxie

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.