CVE-2026-97811

Analyzed Analyzed - Analysis Complete

Double Free in OpenSSH for Windows Allows Local Privilege Escalation

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-97811

EUVD

EUVD-2026-100413

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2022	to 10.0.20348.5761 (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_10_22h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_22h2	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_2019	to 10.0.17763.9376 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-415	The product calls free() twice on the same memory address.
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This vulnerability is a double free issue in OpenSSH for Windows. A double free occurs when memory is freed twice, which can lead to memory corruption and potentially allow an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

An authorized attacker could exploit this vulnerability to gain higher privileges on your system, potentially allowing them to perform unauthorized actions, install malware, or access sensitive data. Systems running vulnerable versions of OpenSSH for Windows are at risk.

Compliance Impact

This vulnerability allows local privilege escalation, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (health data security) by enabling unauthorized access or modification of protected information.

Mitigation Strategies

Apply the latest security updates from Microsoft for OpenSSH on Windows. Check the Microsoft Update Catalog or use Windows Update to install patches for affected Windows versions.

Hi! I’m here to help you understand CVE-2026-97811. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70