Unintended Proxy or Intermediary in Microsoft Windows and Windows Server - CVE-2026-69531
Published: September 8, 2026
Vulnerability identifier: #VU147775
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69531
CWE-ID: CWE-441
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to make unauthorized modifications to protected system data.
The vulnerability exists due to an unintended proxy or intermediary (\'confused deputy\') in Microsoft Windows Speech when triggering the vulnerability locally. A local user can trigger the vulnerability to make unauthorized modifications to protected system data.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-69531
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7725, 10 22H2 10.0.19045.7725, 10 1607 10.0.14393.9512, 10 1809 10.0.17763.9245, 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 2016 10.0.14393.9512, 2019 10.0.17763.9245, 2022 10.0.20348.5622, 2025 10.0.26100.33438
Windows Server - addressed in versions 2016 10.0.14393.9512, 2019 10.0.17763.9245, 2022 10.0.20348.5622, 2025 10.0.26100.33438