CVE-2026-26183: CWE-284: Improper Access Control in Microsoft Windows Server 2012
Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26183) affects Windows Server 2012 version 6.2.9200.0 and is caused by improper access control in the Windows RPC API. An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected Windows Server 2012 system, potentially gaining administrative rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
Mitigation Recommendations
Microsoft has released an official patch to fix this vulnerability. Administrators should apply the update available from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183 to remediate this issue.
CVE-2026-26183: CWE-284: Improper Access Control in Microsoft Windows Server 2012
Description
Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26183) affects Windows Server 2012 version 6.2.9200.0 and is caused by improper access control in the Windows RPC API. An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected Windows Server 2012 system, potentially gaining administrative rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
Mitigation Recommendations
Microsoft has released an official patch to fix this vulnerability. Administrators should apply the update available from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.778Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183","vendor":"Microsoft"}]
Threat ID: 69de7a1d82d89c981fd6a722
Added to database: 04/14/2026, 17:32:13 UTC
Last enriched: 06/19/2026, 17:01:11 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 83
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