CVE-2026-20843
Unknown Unknown - Not Provided
Improper Access Control in Windows RRAS Enables Local Privilege Escalation

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Microsoft Corporation

Description
Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20843
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft routing_and_remote_access_service *
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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 an improper access control issue in the Windows Routing and Remote Access Service (RRAS) that allows an authorized attacker to locally elevate their privileges.

Impact Analysis

An attacker who is already authorized on the system could exploit this vulnerability to gain higher privileges, potentially leading to full control over the affected system and compromising confidentiality, integrity, and availability.

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