EUVD-2026-73792
GHSA-2r93-c943-m797
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only attack (AV:L), low-privilege authorized account required (PR:L), high complexity for UAF heap exploitation (AC:H), full system compromise post-escalation (C:H/I:H/A:H), no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Management Instrumentation (WMI) via a use-after-free memory corruption flaw enables any low-privileged local account holder to gain full system compromise (C:H/I:H/A:H) across a sweeping range of Windows client and server versions from Server 2012 through Windows 11 26H1. The CVSS AC:H rating reflects the heap-grooming and race-condition complexity inherent in reliable UAF exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a low-privileged local account with interactive or remote logon rights to the target Windows system (CVSS PR:L confirmed). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) correctly characterizes this as a local-only, high-complexity attack. … 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-released patches for the specific Windows build in use, targeting the fixed build numbers listed per OS version in the EUVD advisory and detailed at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77905. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server 2012/2016/2019/2022 and Windows 10/11 systems in your environment to establish baseline exposure and identify systems with the highest privilege accounts. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
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