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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-69509

Role: Windows Fax Service Elevation of Privilege Vulnerability

Description

Heap-based buffer overflow in Windows Fax Service 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 < 10.0.14393.9512affected

Microsoft Windows 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.9245affected

Microsoft Windows 10 Version 21H2

  • 10.0.19044.0 to < 10.0.19044.7725affected

Microsoft Windows 10 Version 22H2

  • 10.0.19045.0 to < 10.0.19045.7725affected

Microsoft Windows 11 version 23H2

  • 10.0.22631.0 to < 10.0.22631.7582affected

Microsoft Windows 11 Version 23H2

  • 10.0.22631.0 to < 10.0.22631.7582affected

Microsoft Windows 11 Version 24H2

  • 10.0.26100.0 to < 10.0.26100.9445affected

Microsoft Windows 11 Version 25H2

  • 10.0.26200.0 to < 10.0.26200.9445affected

Microsoft Windows 11 version 26H1

  • 10.0.28000.0 to < 10.0.28000.2954affected

Microsoft Windows Server 2012

  • 6.2.9200.0 to < 6.2.9200.26349affected

Microsoft Windows Server 2012 (Server Core installation)

  • 6.2.9200.0 to < 6.2.9200.26349affected

Microsoft Windows Server 2012 R2

  • 6.3.9600.0 to < 6.3.9600.23398affected

Microsoft Windows Server 2012 R2 (Server Core installation)

  • 6.3.9600.0 to < 6.3.9600.23398affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.9512affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.9512affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.9245affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.9245affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.5622affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.33438affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.33438affected

References