EUVD-2026-56617
GHSA-6mq3-qc5g-p928
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring a pre-existing low-privilege account; missing authentication grants unrestricted SYSTEM access yielding full C/I/A impact; scope unchanged as escalation stays within the compromised host.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Remote Desktop Services affects a broad range of Windows 10, Windows 11, and Windows Server versions from 2012 through 2025, allowing a locally authenticated low-privilege attacker to elevate to full SYSTEM-level control. The root cause is CWE-306 - a critical RDS function entirely lacking an authentication gate - meaning any low-privilege account holder can invoke it without proper authorization. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a low-privileged local account on the target Windows system (CVSS PR:L, AV:L) - this is the sole prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 base score (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately scopes this as a serious but locally-bounded escalation: an attacker must first obtain a low-privileged local account before reaching the vulnerable function. … 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 fix is to apply the Microsoft-released security update for the specific affected Windows version; patch availability is confirmed by vendor per the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61364, which contains the applicable KB articles per product. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Identify all Windows 10, Windows 11, and Windows Server 2012-2025 systems in your environment within 24 hours. …
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External POC / Exploit Code
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