# CVE-2016-3213: WPAD Elevation of Privilege Vulnerability CVE-2016-3213 is fixed in 30 products on 1 platform, first by KB3163018, released June 14, 2016. 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-2016-3213 - Priority: Urgent - CVSS: n/a (Important) - EPSS: 0.6690 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Jun 14, 2016 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3213 ## Description

An elevation of privilege vulnerability exists in Microsoft Windows when the Web Proxy Auto Discovery (WPAD) protocol falls back to a vulnerable proxy discovery process. An attacker who successfully exploited this vulnerability could bypass security and gain elevated privileges on a targeted system.

To exploit the vulnerability, an attacker could respond to NetBIOS name requests for WPAD.

The update addresses the vulnerability by correcting how Windows handles proxy discovery.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 9 on Windows Vista Service Pack 2 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Internet Explorer 9 on Windows Vista x64 Edition Service Pack 2 | | [KB3160005](https://patchblox.com/security/data/fix/microsoft/kb3160005.md) | Jun 14, 2016 | | Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.420 | [KB3163018](https://patchblox.com/security/data/fix/microsoft/kb3163018.md) | Jun 14, 2016 | | Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.420 | [KB3163018](https://patchblox.com/security/data/fix/microsoft/kb3163018.md) | Jun 14, 2016 | | Microsoft | Windows 10 for 32-bit Systems | 10240.16942 | [KB3163017](https://patchblox.com/security/data/fix/microsoft/kb3163017.md) | Jun 14, 2016 | | Microsoft | Windows 10 for x64-based Systems | 10240.16942 | [KB3163017](https://patchblox.com/security/data/fix/microsoft/kb3163017.md) | Jun 14, 2016 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows 8.1 for x64-based systems | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows RT 8.1 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 R2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Vista Service Pack 2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | | Microsoft | Windows Vista x64 Edition Service Pack 2 | | [KB3161949](https://patchblox.com/security/data/fix/microsoft/kb3161949.md) | Jun 14, 2016 | --- Data as of 2026-11-10T20:03:11Z 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 Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.