EUVD-2026-73654
GHSA-rcjf-c62j-fjmv
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privilege required; AC:H reflects race-condition or heap-grooming requirement; full C/I/A because SYSTEM-level code execution achieved; no scope change as exploitation stays within the local system.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Use after free in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Modern Device Management (MDM) allows a low-privileged authenticated user to achieve full system compromise via a use-after-free memory corruption flaw. Affected builds span Windows 10, Windows 11 (multiple feature versions), Windows Server 2019, 2022, and 2025, with fixed build numbers published by Microsoft. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local, authenticated session with at minimum a low-privilege account (PR:L per CVSS) on the target Windows system. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate-to-meaningful for enterprise environments where MDM-managed endpoints are common. … 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 | Apply the Microsoft-issued cumulative updates that bring each affected OS to or above the patched build thresholds: Windows Server 2022 to ≥10.0.20348.5622, Windows Server 2019/1809 to ≥10.0.17763.9245, Windows 10 21H2 to ≥10.0.19044.7725, Windows 10 22H2 to ≥10.0.19045.7725, Windows 11 23H2 to ≥10.0.22631.7582, Windows 11 24H2 and Server 2025 to ≥10.0.26100.9445 (desktop) / ≥10.0.26100.33438 (server), Windows 11 25H2 to ≥10.0.26200.9445, and Windows 11 26H1 to ≥10.0.28000.2954. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, Windows Server 2019, 2022, and 2025 systems and identify those handling critical operations or sensitive data. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today