CVE-2026-70057
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Incorrect Authorization Bypass in Windows RRAS

Vulnerability report for CVE-2026-70057, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-13

Last updated on: 2026-10-28

Assigner: Microsoft Corporation

Description

Incorrect authorization in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to bypass a security feature locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-13
Last Modified
2026-10-28
Generated
2026-11-08
AI Q&A
2026-10-14
EPSS Evaluated
2026-11-07
NVD
EUVD

Affected Vendors & Products

Showing 26 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2012 r2
microsoft windows_server_2012 *
microsoft windows_10_1607 to 10.0.14393.9612 (exc)
microsoft windows_10_1607 to 10.0.14393.9612 (exc)
microsoft windows_10_1809 to 10.0.17763.9376 (exc)
microsoft windows_10_1809 to 10.0.17763.9376 (exc)
microsoft windows_10_21h2 to 10.0.19044.7807 (exc)
microsoft windows_10_21h2 to 10.0.19044.7807 (exc)
microsoft windows_10_21h2 to 10.0.19044.7807 (exc)
microsoft windows_11_23h2 to 10.0.22631.7652 (exc)
microsoft windows_11_23h2 to 10.0.22631.7652 (exc)
microsoft windows_11_24h2 to 10.0.26100.9711 (exc)
microsoft windows_11_24h2 to 10.0.26100.9711 (exc)
microsoft windows_11_25h2 to 10.0.26200.9711 (exc)
microsoft windows_11_25h2 to 10.0.26200.9711 (exc)
microsoft windows_11_26h1 to 10.0.28000.3231 (exc)
microsoft windows_11_26h1 to 10.0.28000.3231 (exc)
microsoft windows_11_26h2 to 10.0.26300.9711 (exc)
microsoft windows_11_26h2 to 10.0.26300.9711 (exc)
microsoft windows_server_2016 to 10.0.14393.9612 (exc)
microsoft windows_server_2019 to 10.0.17763.9376 (exc)
microsoft windows_server_2025 to 10.0.26100.33650 (exc)
microsoft windows_server_2022 to 10.0.20348.5761 (exc)
microsoft windows_10_22h2 to 10.0.19045.7807 (exc)
microsoft windows_10_22h2 to 10.0.19045.7807 (exc)
microsoft windows_10_22h2 to 10.0.19045.7807 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

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Executive Summary

This vulnerability involves incorrect authorization in Windows Routing and Remote Access Service (RRAS). An authorized attacker can bypass a security feature locally on affected systems.

Detection Guidance

This vulnerability involves incorrect authorization in Windows RRAS allowing local bypass of security features. Detection requires checking RRAS configuration and Windows update status. Use PowerShell commands like 'Get-WindowsPackage -Online | Where-Object {$_.PackageName -like "*RRAS*"}' to verify RRAS components and 'Get-HotFix' to check for missing updates addressing this issue.

Impact Analysis

An attacker could exploit this to bypass security controls on your system, potentially gaining unauthorized access or executing actions they shouldn't be able to perform locally.

Compliance Impact

This vulnerability allows unauthorized bypass of security features, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (health data security) by enabling data breaches or unauthorized disclosures.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the incorrect authorization issue in Windows Routing and Remote Access Service (RRAS).

Monitor for unauthorized access attempts or unusual activity in RRAS logs.

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