# CVE-2016-3302: Windows Lock Screen Elevation of Privilege Vulnerability

CVE-2016-3302 is fixed in 11 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-2016-3302
- Priority: High
- CVSS: 7.0 (Important)
- EPSS: 0.0236
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Sep 13, 2016
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3302

## Description

<p>An elevation of privilege vulnerability exists when Windows improperly allows web content to load from the Windows lock screen. To exploit the vulnerability, an attacker with physical access to a user’s computer could either connect to a maliciously configured WiFi hotspot or insert a mobile broadband adaptor in the user’s computer.</p> <p>An attacker who successfully exploited the vulnerability could potentially execute code on a user's locked computer.  However, the attacker would have no way to either force a user to connect to the hotspot or control the default browser selection on the user’s computer.</p> <p>The security update addresses the vulnerability by correcting the behavior of the Windows lock screen to prevent unintended web content from loading.</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 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB3178539](https://patchblox.com/security/data/fix/microsoft/kb3178539.md) | Sep 13, 2016 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB3178539](https://patchblox.com/security/data/fix/microsoft/kb3178539.md) | Sep 13, 2016 |
| Microsoft | Windows RT 8.1 |  | [KB3178539](https://patchblox.com/security/data/fix/microsoft/kb3178539.md) | Sep 13, 2016 |
| Microsoft | Windows Server 2012 R2 |  | [KB3178539](https://patchblox.com/security/data/fix/microsoft/kb3178539.md) | Sep 13, 2016 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB3178539](https://patchblox.com/security/data/fix/microsoft/kb3178539.md) | Sep 13, 2016 |

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Data as of 2026-11-07T18:46:35Z 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

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