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CVE-2025-21389: Windows Universal Plug and Play (UPnP) Denial of Service

CVE-2025-21389 · published 1 year ago

Summary

An attacker can crash the Windows UPnP service on a network, causing a denial of service. This is a concern for businesses that rely on UPnP for certain functions, such as network device discovery. To mitigate this risk, consider disabling UPnP on your network or ensuring that UPnP is only enabled on specific devices that require it.

What to do

Update microsoft windows_10_1507 to version 10.0.10240.20890 or later.
Update microsoft windows_10_1607 to version 10.0.14393.7699 or later.
Update microsoft windows_10_1809 to version 10.0.17763.6775 or later.
Update microsoft windows_10_21h2 to version 10.0.19044.5371 or later.
Update microsoft windows_10_22h2 to version 10.0.19045.5371 or later.
Update microsoft windows_11_22h2 to version 10.0.22621.4751 or later.
Update microsoft windows_11_23h2 to version 10.0.22631.4751 or later.
Update microsoft windows_11_24h2 to version 10.0.26100.2894 or later.
Update microsoft windows_server_2016 to version 10.0.14393.7699 or later.
Update microsoft windows_server_2019 to version 10.0.17763.6775 or later.
Update microsoft windows_server_2022 to version 10.0.20348.3091 or later.
Update microsoft windows_server_2022_23h2 to version 10.0.25398.1369 or later.
Update microsoft windows_server_2025 to version 10.0.26100.2894 or later.

Affected software

Vendor	Product	Affected versions
microsoft	windows_10_1507	< 10.0.10240.20890 `cpe:2.3:o:microsoft:windows_10_1507:::::::x64:*`
microsoft	windows_10_1607	< 10.0.14393.7699 `cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*`
microsoft	windows_10_1809	< 10.0.17763.6775 `cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*`
microsoft	windows_10_21h2	< 10.0.19044.5371 `cpe:2.3:o:microsoft:windows_10_21h2::::::::`
microsoft	windows_10_22h2	< 10.0.19045.5371 `cpe:2.3:o:microsoft:windows_10_22h2::::::::`
microsoft	windows_11_22h2	< 10.0.22621.4751 `cpe:2.3:o:microsoft:windows_11_22h2::::::::`
microsoft	windows_11_23h2	< 10.0.22631.4751 `cpe:2.3:o:microsoft:windows_11_23h2::::::::`
microsoft	windows_11_24h2	< 10.0.26100.2894 `cpe:2.3:o:microsoft:windows_11_24h2::::::::`
microsoft	windows_server_2008	r2 `cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::`
microsoft	windows_server_2012	r2 `cpe:2.3:o:microsoft:windows_server_2012:-:::::::*`
microsoft	windows_server_2016	< 10.0.14393.7699 `cpe:2.3:o:microsoft:windows_server_2016::::::::`
microsoft	windows_server_2019	< 10.0.17763.6775 `cpe:2.3:o:microsoft:windows_server_2019::::::::`
microsoft	windows_server_2022	< 10.0.20348.3091 `cpe:2.3:o:microsoft:windows_server_2022::::::::`
microsoft	windows_server_2022_23h2	< 10.0.25398.1369 `cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::`
microsoft	windows_server_2025	< 10.0.26100.2894 `cpe:2.3:o:microsoft:windows_server_2025::::::::`

Original advisory text

Uncontrolled resource consumption in Windows Universal Plug and Play (UPnP) Device Host allows an unauthorized attacker to deny service over a network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21389 Patch Vendor Advisory

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically
Gives an attacker partial control

Severity

7.5 High

Exploitation

2% chance of attack within 30 days

Type

CWE-400Uncontrolled Resource Consumption

Timeline

Published14 Jan 2025

Updated4 Nov 2026

First seen6 Mar 2026

Sources

CVE-2025-21389 · NVD

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