CVE-2026-34332: CWE-416: Use After Free in Microsoft Windows Server 2025
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-34332) involves a use-after-free condition in Windows Kernel-Mode Drivers on Microsoft Windows Server 2025 (version 10.0.26100.0). Exploitation requires an attacker with some level of authorization and can be performed remotely over a network, potentially allowing execution of arbitrary code. The issue is classified under CWE-416 (Use After Free). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker must have some privileges (low complexity) and user interaction is required. The vulnerability affects kernel-mode drivers, which can allow deep system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34332 to remediate this vulnerability.
CVE-2026-34332: CWE-416: Use After Free in Microsoft Windows Server 2025
Description
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-34332) involves a use-after-free condition in Windows Kernel-Mode Drivers on Microsoft Windows Server 2025 (version 10.0.26100.0). Exploitation requires an attacker with some level of authorization and can be performed remotely over a network, potentially allowing execution of arbitrary code. The issue is classified under CWE-416 (Use After Free). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker must have some privileges (low complexity) and user interaction is required. The vulnerability affects kernel-mode drivers, which can allow deep system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34332 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.445Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34332","vendor":"Microsoft"}]
Threat ID: 6a03653ccbff5d861008c3df
Added to database: 05/12/2026, 17:37:00 UTC
Last enriched: 06/19/2026, 17:32:07 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 94
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