# CVE-2017-0279: Windows SMB Remote Code Execution Vulnerability CVE-2017-0279 is fixed in 27 products on 1 platform, first by KB4019473, released May 9, 2017. It is not reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2017-0279 - Priority: Urgent - CVSS: 7.0 (Critical) - EPSS: 0.1085 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: May 9, 2017 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0279 ## Description

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests. An attacker who successfully exploited the vulnerability could gain the ability to execute code on the target server.

To exploit the vulnerability, in most situations, an authenticated attacker could send a specially crafted packet to a targeted SMBv1 server.

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

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.916 | [KB4019473](https://patchblox.com/security/data/fix/microsoft/kb4019473.md) | May 9, 2017 | | Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.916 | [KB4019473](https://patchblox.com/security/data/fix/microsoft/kb4019473.md) | May 9, 2017 | | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | | [KB4016871](https://patchblox.com/security/data/fix/microsoft/kb4016871.md) | May 9, 2017 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | | [KB4016871](https://patchblox.com/security/data/fix/microsoft/kb4016871.md) | May 9, 2017 | | Microsoft | Windows 10 for 32-bit Systems | 10240.17394 | [KB4019474](https://patchblox.com/security/data/fix/microsoft/kb4019474.md) | May 9, 2017 | | Microsoft | Windows 10 for x64-based Systems | 10240.17394 | [KB4019474](https://patchblox.com/security/data/fix/microsoft/kb4019474.md) | May 9, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4019213](https://patchblox.com/security/data/fix/microsoft/kb4019213.md) | May 9, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4019215](https://patchblox.com/security/data/fix/microsoft/kb4019215.md) | May 9, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4019213](https://patchblox.com/security/data/fix/microsoft/kb4019213.md) | May 9, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4019215](https://patchblox.com/security/data/fix/microsoft/kb4019215.md) | May 9, 2017 | | Microsoft | Windows RT 8.1 | | [KB4019215](https://patchblox.com/security/data/fix/microsoft/kb4019215.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4018466](https://patchblox.com/security/data/fix/microsoft/kb4018466.md) | May 9, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4018466](https://patchblox.com/security/data/fix/microsoft/kb4018466.md) | May 9, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4018466](https://patchblox.com/security/data/fix/microsoft/kb4018466.md) | May 9, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4018466](https://patchblox.com/security/data/fix/microsoft/kb4018466.md) | May 9, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4018466](https://patchblox.com/security/data/fix/microsoft/kb4018466.md) | May 9, 2017 | | Microsoft | Windows Server 2012 | | [KB4019214](https://patchblox.com/security/data/fix/microsoft/kb4019214.md) | May 9, 2017 | | Microsoft | Windows Server 2012 | | [KB4019216](https://patchblox.com/security/data/fix/microsoft/kb4019216.md) | May 9, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4019214](https://patchblox.com/security/data/fix/microsoft/kb4019214.md) | May 9, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4019216](https://patchblox.com/security/data/fix/microsoft/kb4019216.md) | May 9, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4019213](https://patchblox.com/security/data/fix/microsoft/kb4019213.md) | May 9, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4019215](https://patchblox.com/security/data/fix/microsoft/kb4019215.md) | May 9, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4019213](https://patchblox.com/security/data/fix/microsoft/kb4019213.md) | May 9, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4019215](https://patchblox.com/security/data/fix/microsoft/kb4019215.md) | May 9, 2017 | | Microsoft | Windows Server 2016 | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 | --- Data as of 2026-11-07T12:40:37Z 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