FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition.
MSRC compact vulnerability detail
CVE-2025-26665 · Windows upnphost.dll Elevation of Privilege Vulnerability
Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.
Signals
Windows upnphost.dll
Elevation of Privilege
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Less Likely
CWE
Patch Diff
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Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
Description
Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.
FAQ / Articles
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
FAQ
Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available? Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.
Windows upnphost.dll Elevation of Privilege Vulnerability
Sensitive data storage in improperly locked memory in Windows upnphost.dll allows an authorized attacker to elevate privileges locally.