CVE-2026-88230

HighCVSS 7.8/10Last modified Nov 11, 2026

Description

Heap-based buffer overflow in Windows LUAFV allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.9688
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.9487
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.7846
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.7846
MicrosoftWindows 11 version 23H2>= 10.0.22631.0, < 10.0.22631.7711
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.7711
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.9974
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.9974
MicrosoftWindows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.3501
MicrosoftWindows 11 Version 26H2>= 10.0.26300.0, < 10.0.26300.9974
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.9688
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.9688
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.9487
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.9487
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.5870
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.33822
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33822

References

Timeline

Published
Nov 10, 2026
Last modified
Nov 11, 2026
NVD status
Awaiting Analysis

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CVE-2026-88230: High severity, CVSS 7.8 | Vulnix