Main Vulnerability Database Vulnerabilities #VU164698

Heap-based buffer overflow in Microsoft Windows and Windows Server - CVE-2026-105587

Published: November 10, 2026

Vulnerability identifier: #VU164698

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-2026-105587

CWE-ID: CWE-122

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges to SYSTEM.

The vulnerability exists due to a heap-based buffer overflow in Windows OLE DB when processing data in a privileged process. A local user can trigger heap memory corruption to gain SYSTEM privileges.

Successful exploitation requires the affected service to be enabled and depends on a favorable memory layout in the privileged process.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-105587

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

External References

Related Security Bulletins