# CVE-2017-0016: Windows Denial of Service Vulnerability

CVE-2017-0016 is fixed in 13 products on 1 platform, first by KB4013198, released March 14, 2017. 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-2017-0016
- Priority: Urgent
- CVSS: 5.3 (Important)
- EPSS: 0.2708
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: yes
- Vendor exploitability assessment: Exploitation More Likely
- Published: Mar 14, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0016

## Description

<p>A denial of service vulnerability exists in implementations of the Microsoft Server Message Block 2.0 and 3.0 (SMBv2/SMBv3) client. The vulnerability is due to improper handling of certain requests sent by a malicious SMB server to the client. An attacker who successfully exploited this vulnerability could cause the affected system to stop responding until it is manually restarted.</p> <p>To exploit the vulnerability, an attacker could use various methods such as redirectors, injected HTML header links, etc., which could cause the SMB client to connect to a malicious SMB server.</p> <p>The security update addresses the vulnerability by correcting how the Microsoft SMBv2/SMBv3 Client handles specially crafted requests.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.839 | [KB4013198](https://patchblox.com/security/data/fix/microsoft/kb4013198.md) | Mar 14, 2017 |
| Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.839 | [KB4013198](https://patchblox.com/security/data/fix/microsoft/kb4013198.md) | Mar 14, 2017 |
| Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 |
| Microsoft | Windows 10 for 32-bit Systems | 10240.17319 | [KB4012606](https://patchblox.com/security/data/fix/microsoft/kb4012606.md) | Mar 14, 2017 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17319 | [KB4012606](https://patchblox.com/security/data/fix/microsoft/kb4012606.md) | Mar 14, 2017 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 |
| Microsoft | Windows RT 8.1 |  | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2012 R2 |  | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2012 R2 |  | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2016 | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 |

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Data as of 2026-11-08T06:59:42Z 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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