Stack-based buffer overflow in Microsoft Windows and Windows Server - CVE-2026-71337
Published: September 9, 2026
Vulnerability identifier: #VU148062
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-71337
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to a stack-based buffer overflow in Windows Storage Management Provider when used locally. A local user can trigger the overflow to escalate privileges.
The elevation path is from Medium Integrity Level to Local Service.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-71337
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7725, 10 22H2 10.0.19045.7725, 11 23H2 10.0.22631.7582, 11 24H2 10.0.26100.9445, 11 25H2 10.0.26200.9445, 11 26H1 10.0.28000.2954
Windows Server - addressed in versions 2022 10.0.20348.5622, 2025 10.0.26100.33438
Windows Server - addressed in versions 2022 10.0.20348.5622, 2025 10.0.26100.33438