# CVE-2016-3223: Group Policy Elevation of Privilege Vulnerability CVE-2016-3223 is fixed in 23 products on 1 platform, first by KB3163018, released June 14, 2016. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2016-3223 - Priority: High - CVSS: n/a (Important) - EPSS: 0.2125 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Unlikely - Published: Jun 14, 2016 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3223 ## Description

An elevation of privilege vulnerability exists when Microsoft Windows processes group policy updates. An attacker who successfully exploited this vulnerability could potentially escalate permissions or perform additional privileged actions on the target machine.

To exploit this vulnerability, an attacker would need to launch a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine. An attacker could then create a group policy to grant administrator rights to a standard user.

The security update addresses the vulnerability by enforcing Kerberos authentication for certain calls over LDAP.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | 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 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows 8.1 for x64-based systems | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows RT 8.1 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 R2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Vista Service Pack 2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | | Microsoft | Windows Vista x64 Edition Service Pack 2 | | [KB3159398](https://patchblox.com/security/data/fix/microsoft/kb3159398.md) | Jun 14, 2016 | --- 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