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 classified under CWE-284 (Improper Access Control). It arises from insufficient access control checks in the Windows RPC API, enabling an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, and no user interaction required. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected Windows Server 2012 system. This could lead to full system compromise, including confidentiality, integrity, and availability impacts rated as high. There are currently no known exploits in the wild leveraging this vulnerability.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
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
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 classified under CWE-284 (Improper Access Control). It arises from insufficient access control checks in the Windows RPC API, enabling an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, and no user interaction required. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected Windows Server 2012 system. This could lead to full system compromise, including confidentiality, integrity, and availability impacts rated as high. There are currently no known exploits in the wild leveraging this vulnerability.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
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: 4/14/2026, 5:32:13 PM
Last enriched: 5/19/2026, 10:36:49 AM
Last updated: 5/30/2026, 7:41:23 AM
Views: 42
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