CVE-2026-47654: CWE-416: Use After Free in Microsoft Windows Server 2016
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
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.
CVE-2026-47654: CWE-416: Use After Free in Microsoft 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
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.
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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