---
id: "CVE-2026-102280"
kind: "vulnerability"
aliases: ["CVE-2026-102280"]
title: "Sandboxie-Plus: sandboxed process can modify files outside the sandbox"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "sandboxie-plus", "windows"]
not_affected_if: ["fixed-version", "not-installed"]
published_at: "2026-11-04T22:17:42+00:00"
first_seen_at: "2026-11-04T23:08:47+00:00"
updated_at: "2026-11-04T23:09:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102280", "first_seen_at": "2026-11-04T23:08:47+00:00"}]
exploit_sources: []
---

# Sandboxie-Plus: sandboxed process can modify files outside the sandbox

Sandboxie-Plus before 1.18.6 lets a process inside a sandbox send requests to the SbieSvc SYSTEM service that change attributes, timestamps, writability or 8.3 short names of files outside the sandbox. A short-name redirection can also contribute to code execution as SYSTEM when a privileged process resolves an attacker-controlled short-name path.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Sandboxie-Plus version in the application's About dialog or its installed program list
- Look for the `SbieSvc` service on Windows machines running Sandboxie-Plus and note its version

## Fix

- Sandboxie-Plus: `1.18.6`

## Timeline

- 2026-11-04T23:08:47+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-102280

## Documents

- [advisory] Vendor advisory: github.com https://github.com/sandboxie-plus/Sandboxie/security/advisories/GHSA-vhjw-4xvf-c74w
- [fix] Patch: github.com https://github.com/sandboxie-plus/Sandboxie/commit/4e121cc4dacdc31973adcb81581b0414d48c26fc
- [fix] Release notes: github.com https://github.com/sandboxie-plus/Sandboxie/releases/tag/v1.18.6

## From the sources

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. Prior to 1.18.6, a process inside a sandbox could send MSGID_FILE_SET_ATTRIBUTES or MSGID_FILE_SET_SHORT_NAME to SbieSvc and cause the SYSTEM service to open and modify an existing file outside the sandbox. The direct primitive changes file attributes, timestamps, writeability, or 8.3 short names; a short-name redirection can additionally contribute to SYSTEM code execution when a privileged process resolves an attacker-controlled short-name path in a location SbieSvc can open. This vulnerability is fixed in 1.18.6.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_