Advisoriesby IbisMicrosoftCVE-2026-69544
Microsoft Windows 11 version 26H1: heap buffer overflow
Fix: upgrade to 10.0.28000.2954 or later
Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Windows 11 version 26H1 Product | >= 10.0.28000.0, < 10.0.28000.2954 | 10.0.28000.2954 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122