CVE-2025-26665
Windows upnphost.dll Elevation of Privilege Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| NVDNVD · Analyzed | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.0.
Weakness
Affected products
Microsoft · Windows 10 Version 1507
- affected 10.0.10240.0 – < 10.0.10240.20978
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.7969
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.7136
Microsoft · Windows 10 Version 21H2
- affected 10.0.19044.0 – < 10.0.19044.5737
Microsoft · Windows 10 Version 22H2
- affected 10.0.19045.0 – < 10.0.19045.5737
Microsoft · Windows 11 version 22H2
- affected 10.0.22621.0 – < 10.0.22621.5189
Microsoft · Windows 11 version 22H3
- affected 10.0.22631.0 – < 10.0.22631.5189
Microsoft · Windows 11 Version 23H2
- affected 10.0.22631.0 – < 10.0.22631.5189
Microsoft · Windows 11 Version 24H2
- affected 10.0.26100.0 – < 10.0.26100.3775
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.7601.0 – < 6.1.7601.27670
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.1.7601.0 – < 6.1.7601.27670
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < 6.0.6003.23220
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.6003.0 – < 6.0.6003.23220
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.25423
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < 6.2.9200.25423
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.22523
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < 6.3.9600.22523
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.7969
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < 10.0.14393.7969
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.7136
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < 10.0.17763.7136
Microsoft · Windows Server 2022
- affected 10.0.20348.0 – < 10.0.20348.3453
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)
- affected 10.0.25398.0 – < 10.0.25398.1551
Microsoft · Windows Server 2025
- affected 10.0.26100.0 – < 10.0.26100.3775
Microsoft · Windows Server 2025 (Server Core installation)
- affected 10.0.26100.0 – < 10.0.26100.3775
References (1)
- Windows upnphost.dll Elevation of Privilege Vulnerability (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-26665)Record last updated .