CVE-2026-54538

xrdp is an open source RDP server. In versions 0.10.6 and prior, a n issue was discovered where the software fails to properly validate the totalLength field within the RDP protocol control header during packet reception. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted packet that forces the xrdp process or thread into an infinite, CPU-bound loop. Because the internal pointer fails to advance and the deadlock prevention mechanism is bypassed for specific protocol data unit types, the process consumes excessive CPU resources indefinitely. This can render the xrdp service unavailable and potentially lead to system-wide resource exhaustion if multiple malicious connections are established. This issue has been fixed in version 0.10.6.1.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-9j3q-9mvw-qv7j

Configurations

No configuration.

History

20 Jul 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-20 17:17

Updated : 2026-07-21 19:49

NVD link : CVE-2026-54538

Mitre link : CVE-2026-54538

CVE.ORG link : CVE-2026-54538

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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