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
Description
Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | routing_and_remote_access_service | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-284 | The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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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