# CVE-2016-3300: NetLogon Elevation of Privilege Vulnerability

CVE-2016-3300 is fixed in 7 products on 1 platform, first by KB3177108, released August 9, 2016. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2016-3300
- Priority: Routine
- CVSS: 6.8 (Important)
- EPSS: 0.0131
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: N/A
- Published: Aug 9, 2016
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3300

## Description

<p>An elevation of privilege vulnerability exists when Windows Netlogon improperly establishes a secure communications channel to a domain controller. An attacker who successfully exploited the vulnerability could run a specially crafted application on a domain-joined system.</p> <p>To exploit the vulnerability, an attacker would require access to a domain-joined machine that points to a domain controller running either Windows Server 2012 or Windows Server 2012 R2.</p> <p>The update addresses the vulnerability by modifying how Netlogon handles the establishment of secure channels.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows RT 8.1 |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows Server 2012 |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows Server 2012 R2 |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 2016 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB3177108](https://patchblox.com/security/data/fix/microsoft/kb3177108.md) | Aug 9, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo