Status: UPDATED | Advisory ID: CVE-2026-69544
| CVE | CVE-2026-69544 |
| CVSS Score / Version | 7.8 (High) / CVSS v3.1 |
| Updated | 2026-09-24 |
| 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 | Microsoft Windows 11 (version 26H1) and Microsoft Windows 11 version 26H1 |
| Classified as | CWE-122 (Heap-based Buffer Overflow) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Microsoft | Windows 11 (version 26H1) | ||
| Microsoft | Windows 11 version 26H1 |
| Subsystems | Core Infrastructure, EWS Workstation Delivery/Virtualization |
| Sectors | All Sectors |
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.