CVE-2026-69595: CWE-416: Use After Free in Microsoft Windows Server 2012
Description
CVE-2026-69595 is a critical use-after-free vulnerability in the Windows Services for NFS ONCRPC XDR Driver on Microsoft Windows Server 2012 and related versions. This flaw allows an unauthorized attacker to execute code remotely over a network without requiring user interaction or privileges. The vulnerability has a CVSS 3.1 base score of 9.8, indicating high impact on confidentiality, integrity, and availability. Official patches are available from Microsoft to address this issue.
CVSS v3.1
Score 9.8critical
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-2026-69595) is a use-after-free flaw in the Windows Services for NFS ONCRPC XDR Driver component of Microsoft Windows Server 2012 and other affected Windows versions. An attacker can exploit this vulnerability remotely to execute arbitrary code without authentication or user interaction. The vulnerability affects multiple Windows versions starting from 6.2.9200.0 up to but excluding specific patched builds. Microsoft has released official fixes to remediate this critical security issue.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to execute arbitrary code remotely on affected systems. This can lead to full system compromise, including complete control over confidentiality, integrity, and availability of the affected server. The vulnerability does not require user interaction or privileges, increasing its severity and ease of exploitation.
Mitigation Recommendations
Microsoft has released official patches that address this vulnerability. It is strongly recommended to apply these updates promptly to affected systems. Since this is not a cloud service, remediation must be performed by system administrators by installing the provided security updates. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:18:49.124Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69595","vendor":"Microsoft"}]
Threat ID: 6aa04514acd9273b49fa9680
Added to database: 09/08/2026, 17:25:40 UTC
Last enriched: 10/16/2026, 20:42:08 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 40
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.