# CVE-2016-3346: Windows Permissions Enforcement Elevation of Privilege Vulnerability

CVE-2016-3346 is fixed in 6 products on 1 platform, first by KB3185614, released September 13, 2016. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2016-3346
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0136
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: yes
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Sep 13, 2016
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3346

## Description

<p>An elevation of privilege vulnerability exists in the way that Windows enforces permissions if an attacker loads a specially crafted DLL. A locally authenticated attacker who successfully exploited this vulnerability could run arbitrary code as a system administrator. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>To exploit the vulnerability, an attacker would need to create and implement a malicious DLL and already be able to execute code on the target system.</p> <p>The security update addresses the vulnerability by correcting how Windows enforces permissions.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.589 | [KB3185614](https://patchblox.com/security/data/fix/microsoft/kb3185614.md) | Sep 13, 2016 |
| Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.589 | [KB3185614](https://patchblox.com/security/data/fix/microsoft/kb3185614.md) | Sep 13, 2016 |
| Microsoft | Windows 10 Version 1607 for 32-bit Systems |  | [KB3189866](https://patchblox.com/security/data/fix/microsoft/kb3189866.md) | Sep 13, 2016 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems |  | [KB3189866](https://patchblox.com/security/data/fix/microsoft/kb3189866.md) | Sep 13, 2016 |
| Microsoft | Windows 10 for 32-bit Systems | 10240.17113 | [KB3185611](https://patchblox.com/security/data/fix/microsoft/kb3185611.md) | Sep 13, 2016 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17113 | [KB3185611](https://patchblox.com/security/data/fix/microsoft/kb3185611.md) | Sep 13, 2016 |

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Data as of 2026-11-07T06:34:28Z 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