CVE-2026-41089: CWE-121: Stack-based Buffer Overflow in Microsoft Windows Server 2012
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-41089) is a stack-based buffer overflow in the Windows Netlogon service on Windows Server 2012 (version 6.2.9200.0). It enables remote code execution by an unauthenticated attacker over the network. The CVSS v3.1 base score is 9.8, indicating critical severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability, as documented in their security update guide.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the affected Windows Server 2012 system. This can lead to full system compromise, including complete control over the server, data theft, and service disruption.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089 as soon as possible to protect affected systems.
CVE-2026-41089: CWE-121: Stack-based Buffer Overflow in Microsoft Windows Server 2012
Description
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
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 2022, 23H2 Edition (Server Core installation)
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-41089) is a stack-based buffer overflow in the Windows Netlogon service on Windows Server 2012 (version 6.2.9200.0). It enables remote code execution by an unauthenticated attacker over the network. The CVSS v3.1 base score is 9.8, indicating critical severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability, as documented in their security update guide.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the affected Windows Server 2012 system. This can lead to full system compromise, including complete control over the server, data theft, and service disruption.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089 as soon as possible to protect affected systems.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-16T19:12:36.194Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089","vendor":"Microsoft"}]
Threat ID: 6a03655bcbff5d861008cb07
Added to database: 05/12/2026, 17:37:31 UTC
Last enriched: 08/11/2026, 16:50:48 UTC
Last updated: 09/13/2026, 22:01:33 UTC
Views: 228
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