CVE-2021-47883
Unquoted Service Path Vulnerability in Sandboxie Plus SbieSvc Allows Privilege Escalation
Publication date: 2026-01-21
Last updated on: 2026-01-21
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| sandboxie_plus | sandboxie_plus | 0.7.2 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-428 | The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2021-47883 is an unquoted service path vulnerability in Sandboxie Plus version 0.7.2's 'SbieSvc' service. Because the service executable path is not enclosed in quotes, local attackers can place malicious executables in certain locations that the system interprets incorrectly. When the service starts, these malicious executables run with LocalSystem privileges, allowing attackers to execute arbitrary code with elevated rights. [1, 2]
How can this vulnerability impact me? :
This vulnerability allows local attackers to escalate their privileges by executing arbitrary code with LocalSystem permissions. This means an attacker with limited access can gain full control over the affected system, potentially compromising system integrity, confidentiality, and availability. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
You can detect this vulnerability by checking the service executable path for the 'SbieSvc' service to see if it is unquoted. On a Windows system, use the command: sc qc SbieSvc. If the BINARY_PATH_NAME value is unquoted and contains spaces (e.g., C:\Program Files\Sandboxie-Plus\SbieSvc.exe without quotes), the system is vulnerable. Additionally, you can inspect the service properties via the Services MMC snap-in or use PowerShell commands like Get-WmiObject Win32_Service -Filter "Name='SbieSvc'" | Select-Object PathName to verify the executable path. [2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation involves correcting the unquoted service path by enclosing the executable path in quotes to prevent execution of malicious binaries. Specifically, update the 'SbieSvc' service configuration so that the binary path is quoted, e.g., "C:\Program Files\Sandboxie-Plus\SbieSvc.exe". Alternatively, restrict write permissions on directories in the service path to prevent attackers from placing malicious executables. Also, ensure that the system is patched or updated to a version of Sandboxie Plus where this issue is fixed. [1, 2]