CVE-2025-64721

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.

CVSS v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/sandboxie-plus/Sandboxie/commit/000492f8c411d24292f1b977a107994347bc7dfa	Patch
https://github.com/sandboxie-plus/Sandboxie/releases/tag/v1.16.7	Release Notes
https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-w476-j57g-96vp	Exploit Vendor Advisory
https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-w476-j57g-96vp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:sandboxie-plus:sandboxie:*:*:*:*:plus:*:*:*

History

No history.

Information

Published : 2025-12-11 22:15

Updated : 2025-12-22 18:44

NVD link : CVE-2025-64721

Mitre link : CVE-2025-64721

CVE.ORG link : CVE-2025-64721

JSON object : View

Products Affected

sandboxie-plus

sandboxie

CWE

CWE-190

Integer Overflow or Wraparound

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