CVE-2025-59509

Published: Nov 11, 2025Modified: Nov 17, 2025

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitability: 1.8 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Insertion of sensitive information into sent data in Windows Speech allows an authorized attacker to disclose information locally.

Affected (11)

Products: Microsoft: Windows 10 1809, Windows 10 21h2, Windows 10 22h2, Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows Server 2019, Windows Server 2022, Windows Server 2022 23h2, Windows Server 2025

10 products

Windows 10 1809

Windows 10 21h2

Windows 10 22h2

Windows 11 23h2

Windows 11 24h2

Windows 11 25h2

Windows Server 2019

Windows Server 2022

Windows Server 2022 23h2

Windows Server 2025

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1809	Before 10.0.17763.8027
Microsoft Windows 10 1809	Before 10.0.17763.8027
Microsoft Windows 10 21h2	Before 10.0.19044.6575
Microsoft Windows 10 22h2	Before 10.0.19045.6575
Microsoft Windows 11 23h2	Before 10.0.22631.6199
Microsoft Windows 11 24h2	Before 10.0.26100.7092
Microsoft Windows 11 25h2	Before 10.0.26200.7092
Microsoft Windows Server 2019	Before 10.0.17763.8027
Microsoft Windows Server 2022	Before 10.0.20348.4346
Microsoft Windows Server 2022 23h2	Before 10.0.25398.1965
Microsoft Windows Server 2025	Before 10.0.26100.7092

Related CWEs

Insertion of Sensitive Information Into Sent Data

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59509

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.