# CVE-2017-0295: Windows Default Folder Tampering Vulnerability

CVE-2017-0295 is fixed in 6 products on 1 platform, first by KB4022715, released June 13, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2017-0295
- Priority: Urgent
- CVSS: 4.8 (Important)
- EPSS: 0.0124
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Jun 13, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0295

## Description

<p>A tampering vulnerability exists in Microsoft Windows that could allow an authenticated attacker to modify the C:\Users\DEFAULT folder structure. An attacker who successfully exploited this vulnerability could potentially modify files and folders that are synchronized the first time when a user logs in locally to the computer.</p> <p>To exploit this vulnerability, an attacker would need to log on to the affected system and tamper with the DEFAULT folder contents. An attacker can only exploit this vulnerability prior to a user logging on locally to the computer. Users who have logged on before the attacker attempts to exploit this vulnerability would not be affected.</p> <p>The security update addresses the vulnerability by correcting permissions on folders inside the DEFAULT folder structure.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.1358 | [KB4022715](https://patchblox.com/security/data/fix/microsoft/kb4022715.md) | Jun 13, 2017 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1358 | [KB4022715](https://patchblox.com/security/data/fix/microsoft/kb4022715.md) | Jun 13, 2017 |
| Microsoft | Windows 10 Version 1703 for 32-bit Systems |  | [KB4022725](https://patchblox.com/security/data/fix/microsoft/kb4022725.md) | Jun 13, 2017 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems |  | [KB4022725](https://patchblox.com/security/data/fix/microsoft/kb4022725.md) | Jun 13, 2017 |
| Microsoft | Windows Server 2016 | 14393.1358 | [KB4022715](https://patchblox.com/security/data/fix/microsoft/kb4022715.md) | Jun 13, 2017 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.1358 | [KB4022715](https://patchblox.com/security/data/fix/microsoft/kb4022715.md) | Jun 13, 2017 |

---

Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo