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CVE-2026-69766

HighCVSS 7.0/10Last modified Oct 26, 2026

Description

Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-362 CWE-416

Affected software

Vendor	Product	Versions
Microsoft	Windows 10 Version 1809	>= 10.0.17763.0, < 10.0.17763.9376
Microsoft	Windows 10 Version 21H2	>= 10.0.19044.0, < 10.0.19044.7807
Microsoft	Windows 10 Version 22H2	>= 10.0.19045.0, < 10.0.19045.7807
Microsoft	Windows 11 version 23H2	>= 10.0.22631.0, < 10.0.22631.7652
Microsoft	Windows 11 Version 23H2	>= 10.0.22631.0, < 10.0.22631.7652
Microsoft	Windows 11 Version 24H2	>= 10.0.26100.0, < 10.0.26100.9711
Microsoft	Windows 11 Version 25H2	>= 10.0.26200.0, < 10.0.26200.9711
Microsoft	Windows 11 version 26H1	>= 10.0.28000.0, < 10.0.28000.3231
Microsoft	Windows 11 Version 26H2	>= 10.0.26300.0, < 10.0.26300.9711
Microsoft	Windows Server 2019	>= 10.0.17763.0, < 10.0.17763.9376
Microsoft	Windows Server 2019 (Server Core installation)	>= 10.0.17763.0, < 10.0.17763.9376
Microsoft	Windows Server 2022	>= 10.0.20348.0, < 10.0.20348.5761
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.33650
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.33650

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69766Patch, Vendor Advisory

Timeline

Published: Oct 13, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-697678.8Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.CVE-2026-697689.8Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to execute code over a network.CVE-2026-697699.8Heap-based buffer overflow in Windows HTTP Print Provider allows an unauthorized attacker to execute code over a network.CVE-2026-69777.3A security vulnerability has been detected in vanna-ai vanna up to 2.0.2. The affected element is an unknown function of the component Legac CVE-2026-697705.5Use of uninitialized resource in Windows Spaceport.sys allows an authorized attacker to disclose information locally.CVE-2026-697714.7Improper link resolution before file access ('link following') in Windows Container Manager Service allows an authorized attacker to bypass CVE-2026-697728.8Heap-based buffer overflow in Windows Network File System allows an unauthorized attacker to execute code over a network.CVE-2026-697738.0Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges over a network.CVE-2026-697757.5Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges over a network.CVE-2026-697778.0Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges over an adjacent network.CVE-2026-697788.8Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.CVE-2026-697797.0Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVE-2026-69766: High severity, CVSS 7.0 | Vulnix