Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally
Description
Untrusted pointer dereference in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to elevate privileges locally
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
Description Summary:
An untrusted pointer dereference vulnerability in the Windows Universal Plug and Play (UPnP) Device Host allows local, authenticated attackers to achieve privilege escalation.
Executive Summary:
An untrusted pointer dereference vulnerability in the Microsoft Windows UPnP Device Host allows an authorized local attacker to elevate their privileges to a higher level.
Vulnerability Details
CVE-ID: CVE-2026-32077
Affected Software: Microsoft Windows
Affected Versions: Microsoft Windows 10 Version 1607 (10.0.14393.0 up to 10.0.14393.9060), Version 1809 (10.0.17763.0 up to 10.0.17763.8644), Version 21H2 (10.0.19044.0 up to 10.0.19044.7184), Version 22H2 (10.0.19045.0 up to 10.0.19045.7184), Windows 11 Version 22H3 (10.0.22631.0 up to 10.0.22631.6936), and Version 23H2 (10.0.22631.0 up to 10.0.22631.6936).
Vulnerability: This vulnerability is caused by an untrusted pointer dereference within the UPnP Device Host service. It requires an attacker to already possess local access with low privileges to trigger the flaw and elevate their authority on the target system.
Business Impact
Successful exploitation of this vulnerability allows a local user to gain unauthorized administrative privileges on the host system. Given the CVSS score of 7.8, this represents a high risk to the confidentiality, integrity, and availability of the affected workstation or server. Privilege escalation often serves as a critical stage in broader attack chains, potentially leading to full system compromise or lateral movement within the enterprise network.
Remediation Plan
Immediate Action: Update affected Windows installations to the latest security patch provided by Microsoft in the official update guide.
Proactive Monitoring: Monitor system logs for unusual service crashes related to the UPnP Device Host or unexpected elevation of user privileges.
Compensating Controls: Restrict local user access and follow the principle of least privilege to prevent unauthorized users from executing code in vulnerable environments.
Exploitation Status
Public Exploit Available: No (exploit_available: false)
Analyst Notes: As of April 15, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw requires local access, which mitigates the risk for systems not exposed to untrusted users.
Analyst Recommendation
Organizations should prioritize the deployment of the relevant Microsoft security updates across all affected Windows versions. While the attack vector is local, the ability to escalate privileges makes this a significant security concern for any environment where non-administrative users have access to the underlying OS. Apply the provided patches promptly to remediate the underlying pointer dereference flaw.