CVE-2026-70585: CWE-416: Use After Free in Microsoft Windows Server 2012
Description
CVE-2026-70585 is a use-after-free vulnerability in the Windows Services for NFS ONCRPC XDR Driver affecting Microsoft Windows Server 2012 and related versions. This flaw allows an authorized local attacker with low privileges to execute arbitrary code on the affected system. The vulnerability has a high severity rating with a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
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
This vulnerability (CVE-2026-70585) involves a use-after-free condition in the Windows Services for NFS ONCRPC XDR Driver component of Microsoft Windows Server 2012 and other specified Windows versions. Exploitation requires local access with low privileges and does not require user interaction. Successful exploitation could lead to full confidentiality, integrity, and availability compromise on the affected system. The vulnerability is tracked under CWE-416 (Use After Free). Microsoft has published an official fix addressing this issue.
Potential Impact
An authorized attacker with low privileges on the affected Windows Server versions can execute arbitrary code locally, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70585 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-04T19:47:18.931Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70585","vendor":"Microsoft"}]
Threat ID: 6aa0453eacd9273b49fa9c03
Added to database: 09/08/2026, 17:26:22 UTC
Last enriched: 10/16/2026, 21:42:20 UTC
Last updated: 10/23/2026, 13:15:20 UTC
Views: 26
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