# CVE-2016-3345: Windows SMB Authenticated Remote Code Execution Vulnerability CVE-2016-3345 is fixed in 25 products on 1 platform, first by KB3185614, released September 13, 2016. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2016-3345 - Priority: Routine - CVSS: 5.0 (Important) - EPSS: 0.3246 - 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-2016-3345 ## Description

For Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 operating systems, a remote code execution vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) Server handles certain requests when an authenticated attacker sends specially crafted packets to the SMBv1 server. The vulnerability does not impact other SMB Server versions.

On later operating systems, an attacker who successfully exploited this vulnerability could cause the affected system to stop responding until it is manually restarted.

To exploit the vulnerability, an attacker would first need to authenticate to the SMBv1 Server and have permission to open files on the target server before attempting the attack.

The security update addresses the vulnerability by correcting how the Microsoft SMBv1 Server handles specially crafted requests.

## 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 7 for 32-bit Systems Service Pack 1 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows 8.1 for x64-based systems | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows RT 8.1 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2012 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2012 R2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Vista Service Pack 2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | | Microsoft | Windows Vista x64 Edition Service Pack 2 | | [KB3177186](https://patchblox.com/security/data/fix/microsoft/kb3177186.md) | Sep 13, 2016 | --- 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 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.