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, identified as CVE-2026-26183 and classified under CWE-284 (Improper Access Control), affects Windows Server 2012 version 6.2.9200.0. It arises from insufficient access control in the Windows RPC API, enabling an authorized local attacker to escalate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected Windows Server 2012 system. This can lead to full system compromise, impacting confidentiality, integrity, and availability of the system.
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.
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
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, identified as CVE-2026-26183 and classified under CWE-284 (Improper Access Control), affects Windows Server 2012 version 6.2.9200.0. It arises from insufficient access control in the Windows RPC API, enabling an authorized local attacker to escalate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected Windows Server 2012 system. This can lead to full system compromise, impacting confidentiality, integrity, and availability of the system.
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.
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: 08/15/2026, 13:56:59 UTC
Last updated: 09/14/2026, 22:01:33 UTC
Views: 104
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.