EUVD-2026-73602
GHSA-mj5c-h5j4-54gx
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated, no-interaction heap-overflow RCE in a kernel driver yields full C/I/A impact; retaining Microsoft's AV:N though RNDIS reachability may in practice be adjacent.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows RNDIS allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution in the Windows RNDIS (Remote Network Driver Interface Specification) component affects the full supported Windows line, from Windows 10 1607 and Server 2012 through Windows 11 26H1 and Server 2025. An unauthorized attacker can trigger a heap-based buffer overflow (CWE-122) by delivering malformed RNDIS control/data messages, achieving arbitrary code execution with high confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target to parse attacker-controlled RNDIS messages through the vulnerable Windows RNDIS driver; per CVSS AV:N/AC:L/PR:N/UI:N no authentication or user interaction is needed once such messages reach the parser. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H = 9.8) describes an unauthenticated, no-interaction, low-complexity network RCE - the most severe profile, and given the ubiquity of Windows it warrants prompt Patch-Tuesday-class remediation across every estate. … 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 | Patch available per vendor advisory - apply the Microsoft security update for CVE-2026-69768 to reach the fixed build for each SKU (e.g. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all Windows 10 (build 1607 and later), Windows 11, and Windows Server 2012-2025 systems to establish patching scope and priority tiers. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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