EUVD-2026-73323
GHSA-548x-6463-hm3w
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-exploitable client-side heap overflow requiring victim to connect to attacker's RDP server (UI:R); full code execution yields C:H/I:H/A:H with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in Microsoft's Remote Desktop client for Windows Desktop (versions 1.2.0.0 through below 1.2.7279.0) allows remote code execution on a victim's machine when the user connects to an attacker-controlled RDP server. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) confirms full confidentiality, integrity, and availability impact at low attack complexity, constrained only by the requirement that the victim actively initiate the connection. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively initiate a connection to an attacker-controlled RDP server using the affected Remote Desktop client for Windows Desktop (versions 1.2.0.0 through below 1.2.7279.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (High) accurately captures the technical severity: network-reachable, low complexity, no attacker privileges required, and full C/I/A impact. … 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 | Update the Remote Desktop client for Windows Desktop to version 1.2.7279.0 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running Remote Desktop client versions 1.2.0.0 through 1.2.7278.x and configure firewall rules or user guidance to restrict connections exclusively to known-trusted RDP servers within your infrastructure; alert remote workers to avoid connecting to unfamiliar or suspicious RDP endpoints. …
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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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