PT-2026-87644 · Microsoft · Windows+14
CVE-2026-69669
·
Published
2026-09-08
·
Updated
2026-09-09
CVSS v3.1
8.8
High
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
🚨Critical - Windows Kernel Heap Buffer Overflow Network RCE (CVE-2026-69669)
A heap-based buffer overflow in the Windows Kernel network stack allows unauthenticated remote attackers to trigger out-of-bounds writes via crafted network traffic, leading to kernel-mode RCE and full system compromise. Systems not exposing the vulnerable service/port are not impacted.
👉Affected: Microsoft Windows Kernel (version range TBD)
Fix
RCE
Heap Based Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Windows
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21H2
Windows 10 Version 22H2
Windows 11 Version 23H2
Windows 11 Version 24H2
Windows 11 Version 25H2
Windows 11 Version 26H1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Windows Server 2019
Windows Server 2022
Windows Server 2025