EUVD-2026-73136
GHSA-5jhp-6rw8-qp3w
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-reachable client-side heap overflow requiring no authentication; UI:R reflects victim must connect to attacker server; full triad justified by code execution impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in Windows Remote Desktop Protocol (RDP) affects virtually every supported Windows version, from Server 2012 R2 through Windows 11 26H1 and Server 2025, enabling unauthenticated remote code execution when a victim initiates an RDP connection. The CWE-122 flaw corrupts heap memory during RDP protocol processing, allowing an attacker to hijack execution flow and achieve full confidentiality, integrity, and availability compromise of the affected system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | User interaction is required (CVSS UI:R): the victim must actively initiate an RDP connection to an attacker-controlled server - this is a client-side vulnerability in the RDP protocol parser, not a server-side listening service flaw. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score is well-calibrated: AV:N/AC:L/PR:N reflects network-reachable, low-complexity, unauthenticated exploitation, while UI:R caps the score below 9.0 by requiring the victim to actively initiate an RDP connection. … 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 | Vendor-released patches are available for all affected Windows versions; apply the relevant cumulative update immediately via Windows Update or the Microsoft Update Catalog, targeting the fixed builds listed per product (e.g., Windows Server 2025 to 10.0.26100.33438, Windows 11 24H2 to 10.0.26100.9445, Windows Server 2019 to 10.0.17763.9245, Windows Server 2016 to 10.0.14393.9512, Windows Server 2012 R2 to 6.3.9600.23397). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and audit all systems with RDP enabled or exposed to untrusted networks, prioritizing internet-facing systems and critical infrastructure for immediate patch deployment. …
Sign in for detailed remediation steps and compensating controls.
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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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