CVE-2025-26665

Name: CVE-2025-26665
Creator: NVD / NIST
Published: 2025-04-08T18:15:49.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2025-26665 is a high-severity vulnerability rated 7/10 on the CVSS scale. Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1

7/10

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

EPSS Probability

0.29%

20.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-591

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 10 1507	< 10.0.10240.20978	—
Microsoft	Windows 10 1607	< 10.0.14393.7969	—
Microsoft	Windows 10 1809	< 10.0.17763.7136	—
Microsoft	Windows 10 21h2	< 10.0.19044.5737	—
Microsoft	Windows 10 22h2	< 10.0.19045.5737	—
Microsoft	Windows 11 22h2	< 10.0.22621.5189	—
Microsoft	Windows 11 23h2	< 10.0.22631.5189	—
Microsoft	Windows 11 24h2	< 10.0.26100.3775	—
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Server 2016	< 10.0.14393.7969	—
Microsoft	Windows Server 2019	< 10.0.17763.7136	—
Microsoft	Windows Server 2022	< 10.0.20348.3453	—
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1551	—
Microsoft	Windows Server 2025	< 10.0.26100.3775	—

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26665Vendor Advisory

Timeline

Published: Apr 8, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-26665?

Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.

How severe is CVE-2025-26665?

CVE-2025-26665 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2025-26665?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-26665?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST