EUVD-2026-56444
GHSA-wr3x-mp37-wg8h
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access and low privilege required; high complexity reflects heap-state dependency; no scope change as DWM is not a hypervisor boundary.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Desktop Window Manager (DWM) is possible via a use-after-free memory corruption flaw exploitable by a locally authenticated low-privileged attacker. Successful exploitation grants full control over confidentiality, integrity, and availability of the affected system, consistent with elevation to SYSTEM-level privileges. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an existing low-privileged local user session on the target Windows system (PR:L, AV:L per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.0 reflects a serious but locally constrained vulnerability: attack vector is local (AV:L), complexity is high (AC:H), and low privileges are required (PR:L), meaning an attacker must already have a foothold on the target machine and must overcome non-trivial exploitation conditions. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to apply the Microsoft patch addressing CVE-2026-65788, available via Windows Update or the Microsoft Update Catalog; the exact fixed build version was not confirmed in the provided data and should be verified at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65788. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Windows systems that could be accessed by low-privileged local users, prioritizing those handling sensitive data or running critical business functions. …
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Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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