# CVE-2017-8673: Windows Remote Desktop Protocol (RDP) Denial of Service Vulnerability

CVE-2017-8673 is fixed in 2 products on 1 platform, first by KB4034674, released August 8, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-8673
- Priority: Routine
- CVSS: 5.9 (Important)
- EPSS: 0.0499
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Aug 8, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8673

## Description

<p>A denial of service vulnerability exists in Remote Desktop Protocol (RDP) when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the RDP service on the target system to stop responding.</p> <p>To exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Protocol (RDP) services.</p> <p>The update addresses the vulnerability by correcting how RDP handles connection requests.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.540 | [KB4034674](https://patchblox.com/security/data/fix/microsoft/kb4034674.md) | Aug 8, 2017 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.540 | [KB4034674](https://patchblox.com/security/data/fix/microsoft/kb4034674.md) | Aug 8, 2017 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo