EUVD-2026-56676
GHSA-88r4-hmx3-g273
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered client-side RCE with no attacker privileges; user must initiate connection (UI:R); scope unchanged; full C/I/A impact from code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Stack-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
AnalysisAI
Stack-based buffer overflow in Microsoft's Remote Desktop Client (mstsc.exe) enables remote code execution on unpatched Windows 10 1607 and Windows Server 2012/2016 systems. The CVSS vector (AV:N/AC:L/PR:N/UI:R) confirms the attack is network-delivered and requires no attacker privileges, but demands that a victim actively connect to an attacker-controlled RDP server - a meaningful but achievable social-engineering hurdle. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively connect to an attacker-controlled RDP server using the Windows Remote Desktop Client (mstsc.exe) on an affected OS build. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 High score reflects genuine exploit potential: network-accessible, low complexity, no attacker privileges required, and full C/H/I/A impact on compromise. … 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 vendor-released patch via Windows Update or the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62824. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of all Windows 10 1607, Windows Server 2012, and Windows Server 2016 systems with RDP enabled, prioritizing internet-facing or DMZ-adjacent infrastructure and flagging systems still in use. …
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External POC / Exploit Code
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