EUVD-2026-35749
GHSA-h3xf-v64x-587v
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Microsoft Windows Desktop Window Manager (DWM) Core Library allows an authenticated low-privileged user to elevate to SYSTEM via a use-after-free memory corruption flaw. CVSS 7.8 with high impact to confidentiality, integrity, and availability, but currently no public exploit identified at time of analysis and CISA SSVC rates exploitation status as 'none' with automation as 'no'.
Technical ContextAI
The Desktop Window Manager (DWM) is the compositing window manager in Windows responsible for hardware-accelerated rendering of the desktop, transparency effects, and window thumbnails. Its core library runs with elevated privileges and brokers requests from user-mode applications, making it a recurring target for local privilege escalation research. CWE-416 (Use After Free) indicates the flaw stems from continued reference to a freed memory object, which an attacker can groom and reuse to corrupt kernel or service-level memory structures to gain control of execution flow.
RemediationAI
Patch available per vendor advisory - apply the Microsoft security update referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44807 through Windows Update or WSUS for the matching Windows build; exact KB numbers are listed on that MSRC page and should be cited in the change ticket. No vendor-supplied workaround is referenced in the available data, so as a compensating control until patching completes, restrict interactive and remote-desktop logon rights on sensitive hosts to reduce the population of accounts that can supply the required PR:L access, and monitor for crashes or unexpected restarts of the dwm.exe process which can indicate exploitation attempts (side effect: dwm crashes also occur benignly under graphics driver faults, so tune accordingly). Secondary reference at https://vuldb.com/vuln/369644 may provide additional remediation context.
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today