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CVE-2025-59209: Windows Push Notification Core leaks sensitive info on Windows

CVE-2025-59209 · published 1 year ago

Summary

An attacker on a Windows computer can access sensitive information if they have permission to run certain programs. This can be a concern if unauthorized users have access to the computer or if the computer is compromised by malware. To mitigate this risk, ensure that users have the minimum necessary permissions and keep Windows and its components up to date.

What to do

Update microsoft windows_10_1507 to version 10.0.10240.21161 or later.
Update microsoft windows_10_1607 to version 10.0.14393.8519 or later.
Update microsoft windows_10_1809 to version 10.0.17763.7919 or later.
Update microsoft windows_10_21h2 to version 10.0.19044.6456 or later.
Update microsoft windows_10_22h2 to version 10.0.19045.6456 or later.
Update microsoft windows_11_22h2 to version 10.0.22621.6060 or later.
Update microsoft windows_11_24h2 to version 10.0.26100.6899 or later.
Update microsoft windows_11_25h2 to version 10.0.26200.6899 or later.
Update microsoft windows_server_2019 to version 10.0.17763.7919 or later.
Update microsoft windows_server_2022 to version 10.0.20348.4294 or later.
Update microsoft windows_server_2022_23h2 to version 10.0.25398.1913 or later.

Affected software

Vendor	Product	Affected versions
microsoft	windows_10_1507	< 10.0.10240.21161 `cpe:2.3:o:microsoft:windows_10_1507:::::::x64:*`
microsoft	windows_10_1607	< 10.0.14393.8519 `cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*`
microsoft	windows_10_1809	< 10.0.17763.7919 `cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*`
microsoft	windows_10_21h2	< 10.0.19044.6456 `cpe:2.3:o:microsoft:windows_10_21h2::::::::`
microsoft	windows_10_22h2	< 10.0.19045.6456 `cpe:2.3:o:microsoft:windows_10_22h2::::::::`
microsoft	windows_11_22h2	< 10.0.22621.6060 `cpe:2.3:o:microsoft:windows_11_22h2::::::::`
microsoft	windows_11_23h2	<= 10.0.22631.6060 `cpe:2.3:o:microsoft:windows_11_23h2::::::::`
microsoft	windows_11_24h2	< 10.0.26100.6899 `cpe:2.3:o:microsoft:windows_11_24h2::::::::`
microsoft	windows_11_25h2	< 10.0.26200.6899 `cpe:2.3:o:microsoft:windows_11_25h2::::::::`
microsoft	windows_server_2012	r2 `cpe:2.3:o:microsoft:windows_server_2012:-:::::::*`
microsoft	windows_server_2016	<= 10.0.14393.8519 `cpe:2.3:o:microsoft:windows_server_2016::::::::`
microsoft	windows_server_2019	< 10.0.17763.7919 `cpe:2.3:o:microsoft:windows_server_2019::::::::`
microsoft	windows_server_2022	< 10.0.20348.4294 `cpe:2.3:o:microsoft:windows_server_2022::::::::`
microsoft	windows_server_2022_23h2	< 10.0.25398.1913 `cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::`
microsoft	windows_server_2025	<= 10.0.26100.6899 `cpe:2.3:o:microsoft:windows_server_2025::::::::`

Original advisory text

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59209 Vendor Advisory

Fix within

Internet-facing 60 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker partial control

Severity

5.5 Medium

Exploitation

<1% chance of attack within 30 days

Type

CWE-200Information Exposure

Timeline

Published14 Oct 2025

Updated3 Nov 2026

First seen7 Mar 2026

Sources

CVE-2025-59209 · NVD

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