CVE-2026-88171: CWE-415: Double Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-88171 is a high severity double free vulnerability in the Windows DHCP Server component affecting multiple versions of Microsoft Windows 10, including Version 1607. This flaw allows an unauthorized attacker to execute code remotely over a network. An official fix is available from Microsoft.
CVSS v3.1
Score 8.1high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88171 is a double free vulnerability (CWE-415) in the Windows DHCP Server that affects various builds of Windows 10 and related versions. The vulnerability allows an attacker with network access to execute arbitrary code without requiring user interaction or privileges. The CVSS 3.1 base score is 8.1, indicating high severity, with network attack vector, high impact on confidentiality, integrity, and availability, and requiring high attack complexity. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on affected Windows 10 systems via the DHCP Server, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for affected Windows 10 versions as listed in the vendor advisory. No additional mitigation is required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T21:58:19.188Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88171","vendor":"Microsoft"}]
Threat ID: 6ace85652cdf04f656a002ec
Added to database: 10/13/2026, 19:24:21 UTC
Last enriched: 10/14/2026, 01:19:22 UTC
Last updated: 10/14/2026, 01:19:22 UTC
Views: 2
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