CVE-2025-48819

HIGH

Published Jul 8, 2025 Modified Jul 15, 2025 CWE-591

Description

Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over an adjacent network.

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CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-591 CWE-591

Affected Products

Vendor	Product	Versions
microsoft	windows_10_1507	< 10.0.10240.21073
microsoft	windows_10_1507	< 10.0.10240.21073
microsoft	windows_10_1607	< 10.0.14393.8246
microsoft	windows_10_1607	< 10.0.14393.8246
microsoft	windows_10_1809	< 10.0.17763.7558
microsoft	windows_10_1809	< 10.0.17763.7558
microsoft	windows_10_21h2	< 10.0.19044.6093
microsoft	windows_10_22h2	< 10.0.19045.6093
microsoft	windows_11_22h2	< 10.0.22621.5624
microsoft	windows_11_23h2	< 10.0.22631.5624
microsoft	windows_11_24h2	< 10.0.26100.4652
microsoft	windows_server_2008	All
microsoft	windows_server_2008	All
microsoft	windows_server_2008	All
microsoft	windows_server_2012	All
microsoft	windows_server_2012	All
microsoft	windows_server_2016	< 10.0.14393.8246
microsoft	windows_server_2019	< 10.0.17763.7558
microsoft	windows_server_2022	< 10.0.20348.3932
microsoft	windows_server_2022_23h2	< 10.0.25398.1732
microsoft	windows_server_2025	< 10.0.26100.4652

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48819

Frequently Asked Questions

What is CVE-2025-48819? +

Sensitive data storage in improperly locked memory in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges over an adjacent network. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-48819? +

CVE-2025-48819 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-48819? +

CVE-2025-48819 affects products from microsoft, specifically: windows_10_1507, windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_22h2, windows_11_23h2, windows_11_24h2, windows_server_2008, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2022_23h2, windows_server_2025. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48819? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.