CVE-2026-88117: CWE-416: Use After Free in Microsoft Windows Server 2012
Description
CVE-2026-88117 is a high-severity use-after-free vulnerability in the Windows DHCP Server component affecting multiple versions of Microsoft Windows Server 2012 and related Windows versions. This vulnerability 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 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-2026-88117 is a use-after-free vulnerability (CWE-416) in the Windows DHCP Server that enables remote code execution by an unauthorized attacker over a network. The vulnerability affects several Windows versions including Windows Server 2012 and other Windows builds with specific version ranges. The CVSS 3.1 base score is 8.1, indicating high severity with network attack vector, high complexity, no privileges required, and no user interaction needed. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely on affected systems, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security updates provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88117 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T21:51:51.955Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88117","vendor":"Microsoft"}]
Threat ID: 6ace855b2cdf04f6569ff50d
Added to database: 10/13/2026, 19:24:11 UTC
Last enriched: 10/14/2026, 01:49:19 UTC
Last updated: 10/14/2026, 01:49:19 UTC
Views: 2
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