CVE-2026-70158

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Remote Code Execution in Windows RRAS

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70158

EUVD

EUVD-2026-100124

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2012 6.2.9200.0
Microsoft	Windows	Server 2012 (Server Core installation) 6.2.9200.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-415	The product calls free() twice on the same memory address.

Attack-Flow Graph

Executive Summary

This vulnerability is a Remote Code Execution (RCE) flaw in the Windows Routing and Remote Access Service (RRAS). It allows an attacker to execute arbitrary code on a victim's machine without authorization by exploiting this service.

Detection Guidance

Check if the Windows Routing and Remote Access Service (RRAS) is running on affected systems. Look for unusual network traffic or unauthorized access attempts. Review system logs for suspicious activities related to RRAS. Ensure all Windows systems are updated with the latest security patches from Microsoft.

Impact Analysis

An attacker could gain full control over your system, install malware, steal data, or perform other malicious actions. Systems running affected Windows versions with RRAS enabled are at risk.

Compliance Impact

This vulnerability allows unauthorized remote code execution, which could lead to unauthorized access to sensitive data. For GDPR, this may result in data breaches requiring notification under Article 33. For HIPAA, it could compromise protected health information, violating the Security Rule. Organizations must assess exposure and implement mitigations to maintain compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows RRAS as soon as possible to patch the Remote Code Execution vulnerability.

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