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CVE-2026-47654: CWE-416: Use After Free in Microsoft Windows Server 2016

0
High
VulnerabilityCVE-2026-47654cvecve-2026-47654cwe-416
Published: Tue Jun 09 2026 (06/09/2026, 17:05:11 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Windows Server 2016

Description

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVSS v3.1

Score 7.5high

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:T/RC:C

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/09/2026, 17:55:44 UTC

Technical Analysis

This vulnerability is a use-after-free condition in the Remote Desktop Client on Windows Server 2016 (version 10.0.14393.0). It results in a heap-based buffer overflow that could be exploited by an attacker without privileges or user interaction to execute arbitrary code remotely. The CVSS vector indicates network attack vector, high attack complexity, no privileges required, and requires user interaction. Confidentiality, integrity, and availability impacts are all high. Microsoft has released a temporary fix to mitigate this issue.

Potential Impact

Successful exploitation could allow remote code execution by an unauthorized attacker, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the affected system. No known exploits are currently reported in the wild.

Mitigation Recommendations

A temporary fix is available from Microsoft. Users should apply the temporary fix as recommended in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47654. Monitor the vendor advisory for updates regarding a permanent official fix.

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Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2026-05-19T20:12:27.071Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
temporary-fix
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47654","vendor":"Microsoft"}]

Threat ID: 6a284cf28dd33fbd85665089

Added to database: 6/9/2026, 5:27:14 PM

Last enriched: 6/9/2026, 5:55:44 PM

Last updated: 6/10/2026, 5:14:54 AM

Views: 8

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