CVE-2026-69397
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Use After Free in OpenSSH for Windows

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description
Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.

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Meta Information

Published
2026-09-08
Last Modified
2026-09-09
Generated
2026-09-09
AI Q&A
2026-09-09
EPSS Evaluated
N/A
NVD
CVE-2026-69397

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft openssh *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This vulnerability is a use after free issue in OpenSSH for Windows. It allows an unauthorized attacker to execute arbitrary code over a network by exploiting a flaw where memory is accessed after it has been freed, potentially leading to remote code execution.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially gaining control over it. This could lead to data theft, system damage, or further network compromise if the affected system is part of a larger network.

Mitigation Strategies

Update OpenSSH for Windows to the latest patched version immediately to address the use-after-free vulnerability. Disable remote access if not required and restrict network exposure to minimize attack surface.

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