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Privacy Statement Third-Party Cookies AcceptRejectManage cookies MSRC  Customer Guidance  Security Update Guide  Vulnerabilities  CVE-2026-69393 Windows Spaceport.sys Information Disclosure Vulnerability New On this page  CVE-2026-69393  Subscribe RSS PowerShell  API  CSAF Security Vulnerability Released: Sep 8, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-69393  Impact Information Disclosure Max Severity Important Weakness CWE-125: Out-of-bounds Read CVSS Source Microsoft Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C Metrics CVSS:3.1 5.7 / 5.0  Base score metrics: 5.7 / Temporal score metrics: 5.0  Expand all  Collapse all Metric Value   Base score metrics(8) Attack Vector Network Attack Complexity Low Privileges Required Low User Interaction Required Scope Unchanged Confidentiality High Integrity None Availability None   Temporal score metrics(3) Exploit Code Maturity Unproven Remediation Level Official Fix Report Confidence Confirmed Please see Common Vulnerability Scoring System for more information on the definition of these metrics. Executive Summary Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to disclose information over a network. Exploitability The following table provides an exploitability assessment for this vulnerability at the time of original publication. Publicly disclosed No Exploited No Exploitability assessment Exploitation Less Likely FAQ What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is Kernel memory read - unintentional read access to memory contents in kernel space from a user mode process. Acknowledgements  boolgombear  jmini Thanatos Tian (HKPolyU) & wgg & @2st__ with Diffract & Zhiniang Peng with HUST Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgements for more information. Security Updates To determine the support lifecycle for your software, see the Microsoft Support Lifecycle. Release date Descending  Edit columns  Download  Filters  Product Family  Max Severity  Impact  Platform   Clear Release date  Product Platform Impact Max Severity Article Download Build Number Assigning CNA Title: Release date, Content: Sep 8, 2026 Windows Server 2016 (Server Core installation) - Information Disclosure Important Title: Knowledge Base Articles for Windows Server 2016 (Server Core installation), Content:, 1 link 5123099  Title: Download Security Update for Windows Server 2016 (Server Core installation), Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.14393.9512 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 10 Version 1607 for 32-bit Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 10 Version 1607 for 32-bit Systems, Content:, 1 link 5123099  Title: Download Security Update for Windows 10 Version 1607 for 32-bit Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.14393.9512 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 10 Version 1607 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 10 Version 1607 for x64-based Systems, Content:, 1 link 5123099  Title: Download Security Update for Windows 10 Version 1607 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.14393.9512 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows Server 2016 - Information Disclosure Important Title: Knowledge Base Articles for Windows Server 2016, Content:, 1 link 5123099  Title: Download Security Update for Windows Server 2016, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.14393.9512 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 version 26H1 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 version 26H1 for x64-based Systems, Content:, 1 link 5124012  Title: Download Security Update for Windows 11 version 26H1 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.28000.2954 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows Server 2025 - Information Disclosure Important Title: Knowledge Base Articles for Windows Server 2025, Content:, 1 link 5122871  Title: Download Security Update for Windows Server 2025, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26100.33438 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 26H1 for ARM64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 26H1 for ARM64-based Systems, Content:, 1 link 5124012  Title: Download Security Update for Windows 11 Version 26H1 for ARM64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.28000.2954 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 24H2 for ARM64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 24H2 for ARM64-based Systems, Content:, 1 link 5124008  Title: Download Security Update for Windows 11 Version 24H2 for ARM64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26100.9445 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 24H2 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 24H2 for x64-based Systems, Content:, 1 link 5124008  Title: Download Security Update for Windows 11 Version 24H2 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26100.9445 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 23H2 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 23H2 for x64-based Systems, Content:, 1 link 5122880  Title: Download Security Update for Windows 11 Version 23H2 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.22631.7582 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 23H2 for ARM64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 23H2 for ARM64-based Systems, Content:, 1 link 5122880  Title: Download Security Update for Windows 11 Version 23H2 for ARM64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.22631.7582 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 25H2 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 25H2 for x64-based Systems, Content:, 1 link 5124008  Title: Download Security Update for Windows 11 Version 25H2 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26200.9445 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 11 Version 25H2 for ARM64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 11 Version 25H2 for ARM64-based Systems, Content:, 1 link 5124008  Title: Download Security Update for Windows 11 Version 25H2 for ARM64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26200.9445 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows Server 2025 (Server Core installation) - Information Disclosure Important Title: Knowledge Base Articles for Windows Server 2025 (Server Core installation), Content:, 1 link 5122871  Title: Download Security Update for Windows Server 2025 (Server Core installation), Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.26100.33438 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 10 Version 22H2 for 32-bit Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 10 Version 22H2 for 32-bit Systems, Content:, 1 link 5122878  Title: Download Security Update for Windows 10 Version 22H2 for 32-bit Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.19045.7725 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 10 Version 22H2 for ARM64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 10 Version 22H2 for ARM64-based Systems, Content:, 1 link 5122878  Title: Download Security Update for Windows 10 Version 22H2 for ARM64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.19045.7725 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Windows 10 Version 22H2 for x64-based Systems - Information Disclosure Important Title: Knowledge Base Articles for Windows 10 Version 22H2 for x64-based Systems, Content:, 1 link 5122878  Title: Download Security Update for Windows 10 Version 22H2 for x64-based Systems, Content:, 1 link Security Update  Title: Build numbers, Content: 10.0.19045