CVE-2026-20868
Unknown Unknown - Not Provided
Heap-Based Buffer Overflow in Windows RRAS Enables Remote Code Execution

Publication date: 2026-01-13

Last updated on: 2026-02-10

Assigner: Microsoft Corporation

Description
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
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Meta Information
Published
2026-01-13
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-14
NVD
CVE-2026-20868
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-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
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Executive Summary

This vulnerability is a heap-based buffer overflow in the Windows Routing and Remote Access Service (RRAS) that allows an unauthorized attacker to execute code remotely over a network. [1]

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary code remotely, potentially leading to full system compromise, data loss, or disruption of services. [1]

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