EUVD-2026-73084
GHSA-pjpc-j872-96j4
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring low-privilege execution only; type confusion in a kernel-adjacent messaging component yields full SYSTEM-level compromise across confidentiality, integrity, and availability.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Access of resource using incompatible type ('type confusion') in Windows Core Messaging allows an authorized attacker to elevate privileges locally.
AnalysisAI
Type confusion (CWE-843) in the Windows Core Messaging IPC subsystem enables a locally authenticated low-privileged attacker to escalate privileges to SYSTEM on a broad range of Windows 10, Windows 11, and Windows Server installations. The flaw allows an object to be accessed through an incompatible type reference, corrupting memory in a way that breaks privilege separation boundaries. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local authenticated access with standard low-privileged user rights (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a high-severity local privilege escalation with low attack complexity - once an attacker has any foothold, exploitation requires no additional user interaction or special configuration, making this a near-automatic step in post-compromise lateral movement or sandbox escape chains. … 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 Microsoft's security updates for all affected Windows versions as detailed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70584. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Server systems to identify exposure scope and categorize by criticality and user access patterns. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
Same technique Privilege Escalation
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External POC / Exploit Code
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