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Mallory
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Desktop Window Manager Use-After-Free Elevation of Privilege

IdentifiersCVE-2026-32152CWE-416· Use After Free

CVE-2026-32152 is an Important elevation-of-privilege vulnerability in Microsoft Desktop Window Manager (DWM). The flaw is caused by a use-after-free condition in DWM, classified as CWE-416. According to Microsoft, successful exploitation allows a local authorized attacker to elevate privileges. Publicly available supporting content does not identify the specific vulnerable function or code path, but Microsoft states the issue resides in the Desktop Window Manager component and can be exploited locally with low privileges and no user interaction. Microsoft assessed the vulnerability with CVSS 3.1 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

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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 can allow an attacker who already has local access and low privileges to escalate to SYSTEM privileges on the affected Windows system. Microsoft assessed the resulting impact to confidentiality, integrity, and availability as High, indicating an attacker could gain full control over the host, access sensitive data, modify system or security settings, and disrupt system operation.

Mitigation

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

No specific workaround or mitigation is provided in the supplied content beyond applying Microsoft's official fix. In the absence of a vendor workaround, risk reduction is limited to minimizing local attacker footholds, restricting low-privilege interactive access, and accelerating patch deployment.

Remediation

Patch, then assume compromise.

Apply the official Microsoft security update for CVE-2026-32152 affecting Desktop Window Manager. Microsoft indicates an official fix is available as part of the April 2026 security updates. Standard remediation should include deploying the relevant Windows security updates across affected systems and validating successful installation through normal patch-management processes.
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 CorporationWindows 11 23h2operating_system
Microsoft CorporationWindows 11 24h2operating_system
Microsoft CorporationWindows 11 25h2operating_system
Microsoft CorporationWindows 11 26h1operating_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 signatures1

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.