Weak Authentication in Microsoft Windows and Windows Server - CVE-2026-105529
Published: November 10, 2026
Vulnerability identifier: #VU164657
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105529
CWE-ID: CWE-1390
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges locally.
The vulnerability exists due to weak authentication in Windows Storage when handling operations on Storage Spaces objects. A local user can exploit this weakness to delete Storage Spaces objects created by an administrator without authorization.
Successful exploitation requires an administrator-created Storage Spaces object to be in a particular intermediate state during provisioning.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-105529
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822