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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-70344

Windows Installer Elevation of Privilege Vulnerability

Description

Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Windows 10 Version 1607

  • 10.0.14393.0 to < 10.0.14393.9418affected

Microsoft Windows 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows 10 Version 21H2

  • 10.0.19044.0 to < 10.0.19044.7663affected

Microsoft Windows 10 Version 22H2

  • 10.0.19045.0 to < 10.0.19045.7663affected

Microsoft Windows 11 version 23H2

  • 10.0.22631.0 to < 10.0.22631.7517affected

Microsoft Windows 11 Version 23H2

  • 10.0.22631.0 to < 10.0.22631.7517affected

Microsoft Windows 11 Version 24H2

  • 10.0.26100.0 to < 10.0.26100.9168affected

Microsoft Windows 11 Version 25H2

  • 10.0.26200.0 to < 10.0.26200.9168affected

Microsoft Windows 11 version 26H1

  • 10.0.28000.0 to < 10.0.28000.2704affected

Microsoft Windows Server 2012

  • 6.2.9200.0 to < 6.2.9200.26280affected

Microsoft Windows Server 2012 (Server Core installation)

  • 6.2.9200.0 to < 6.2.9200.26280affected

Microsoft Windows Server 2012 R2

  • 6.3.9600.0 to < 6.3.9600.23338affected

Microsoft Windows Server 2012 R2 (Server Core installation)

  • 6.3.9600.0 to < 6.3.9600.23338affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.9418affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.9418affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.9121affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.5499affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.33296affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.33296affected

References