Status: UPDATED | Advisory ID: CVE-2026-69389
| CVE | CVE-2026-69389 |
| CVSS Score / Version | 7.8 (High) / CVSS v3.1 |
| Updated | 2026-09-25 |
| CVSS Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | see table below |
| Classified as | CWE-122 (Heap-based Buffer Overflow) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Microsoft | Windows 11 (version 23H2) | ||
| Microsoft | Windows 11 (version 24H2) | ||
| Microsoft | Windows 11 (version 25H2) | ||
| Microsoft | Windows 11 (version 26H1) | ||
| Microsoft | Windows Server 2025 | ||
| Microsoft | Windows 10 (version 1607) | ||
| Microsoft | Windows 10 (version 1809) | ||
| Microsoft | Windows 10 (version 21H2) | ||
| Microsoft | Windows 10 (version 22H2) | ||
| Microsoft | Windows Server 2012 | ||
| Microsoft | Windows Server 2016 | ||
| Microsoft | Windows Server 2019 | ||
| Microsoft | Windows Server 2022 | ||
| Microsoft | Windows 10 Version 1607 | ||
| Microsoft | Windows 10 Version 1809 | ||
| Microsoft | Windows 10 Version 21H2 | ||
| Microsoft | Windows 10 Version 22H2 | ||
| Microsoft | Windows 11 version 23H2 | ||
| Microsoft | Windows 11 Version 24H2 | ||
| Microsoft | Windows 11 Version 25H2 | ||
| Microsoft | Windows 11 version 26H1 | ||
| Microsoft | Windows Server 2016 (Server Core installation) | ||
| Microsoft | Windows Server 2019 (Server Core installation) | ||
| Microsoft | Windows Server 2025 (Server Core installation) | ||
| Microsoft | Windows Server 2012 (Server Core installation) | ||
| Microsoft | Windows Server 2012 R2 | ||
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
| Subsystems | Core Infrastructure, EWS Workstation Delivery/Virtualization |
| Sectors | All Sectors |
Heap-based buffer overflow in Windows Storage Management Provider allows an authorized attacker to elevate privileges locally.
Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.