CVE-2026-26183
Received Received - Intake
Improper Access Control in Windows RPC API Enables Local Privilege Escalation

Publication date: 2026-04-14

Last updated on: 2026-04-23

Assigner: Microsoft Corporation

Description
Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-04-14
Last Modified
2026-04-23
Generated
2026-06-16
AI Q&A
2026-04-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-26183
EUVD
EUVD-2026-22428
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2012 r2
microsoft windows_server_2012 *
microsoft windows_server_2016 to 10.0.14393.9060 (exc)
microsoft windows_server_2019 to 10.0.17763.8644 (exc)
microsoft windows_server_2022 to 10.0.20348.5020 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2274 (exc)
microsoft windows_server_2025 to 10.0.26100.32690 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
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Executive Summary

This vulnerability is caused by improper access control in the Windows RPC API. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

An attacker who already has some level of authorization on the system can exploit this vulnerability to gain higher privileges. This can lead to full control over the system, allowing the attacker to compromise confidentiality, integrity, and availability of data and resources.

Compliance Impact

The vulnerability allows an authorized attacker to elevate privileges locally due to improper access control in the Windows RPC API.

Such elevation of privilege vulnerabilities can potentially lead to unauthorized access to sensitive data or systems, which may impact compliance with standards and regulations like GDPR and HIPAA that require strict access controls and protection of sensitive information.

However, no specific information about direct effects on compliance with these standards is provided in the available resources.

Mitigation Strategies

To mitigate this vulnerability, apply the security updates provided by Microsoft as soon as possible to fix the improper access control in the Windows RPC API.

Ensure that only authorized users have local access to systems, as the vulnerability requires local privilege escalation.

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