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Mallory
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Windows UPnP Device Host Elevation of Privilege Vulnerability

IdentifiersCVE-2026-32075CWE-416· Use After Free

CVE-2026-32075 is an elevation-of-privilege vulnerability in Windows Universal Plug and Play (UPnP) Device Host caused by a use-after-free condition. According to Microsoft, the flaw allows a locally authenticated attacker to trigger memory corruption in the UPnP Device Host component after an object has been freed and subsequently reused. The issue is exploitable locally and does not require user interaction. Microsoft classifies it as Important and notes that exploitation can result in privilege escalation from a low-privileged context to administrator privileges.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authorized local attacker with low privileges to elevate privileges to administrator on the affected Windows system. Microsoft’s CVSS v3.1 assessment (7.0, AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) indicates high impact to confidentiality, integrity, and availability, meaning an attacker who gains elevated privileges could access sensitive data, modify system state, and disrupt system operation.

Mitigation

If you can’t patch tonight, do this now.

No vendor workaround or specific mitigation is provided in the supplied content. In the absence of a patch, reduce exposure by restricting local access to trusted users and minimizing opportunities for low-privileged interactive access, but the primary mitigation is prompt installation of Microsoft’s official fix.

Remediation

Patch, then assume compromise.

Apply the official Microsoft security update for CVE-2026-32075 via the MSRC Security Update Guide / April 2026 Patch Tuesday release. Remediation consists of updating the affected Windows UPnP Device Host component to the vendor-fixed version provided by Microsoft.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationWindowsoperating_system
Microsoft CorporationWindows 10 1607operating_system
Microsoft CorporationWindows 10 1809operating_system
Microsoft CorporationWindows 10 21h2operating_system
Microsoft CorporationWindows 10 22h2operating_system
Microsoft CorporationWindows 11 23h2operating_system
Microsoft CorporationWindows 11 24h2operating_system
Microsoft CorporationWindows 11 25h2operating_system
Microsoft CorporationWindows 11 26h1operating_system
Microsoft CorporationWindows Server 2012operating_system
Microsoft CorporationWindows Server 2012 R2operating_system
Microsoft CorporationWindows Server 2016operating_system
Microsoft CorporationWindows Server 2019operating_system
Microsoft CorporationWindows Server 2022operating_system
Microsoft CorporationWindows Server 2022 23h2operating_system
Microsoft CorporationWindows Server 2025operating_system
Microsoft CorporationWindows Server 23h2operating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.