Denial of Service Vulnerability in xrdp Open Source RDP Server
CVE-2026-54538

7.5HIGH

Key Information:

Vendor

Neutrinolabs

Status
Xrdp
Vendor
CVE Published:
20 July 2026

What is CVE-2026-54538?

An issue in xrdp, an open-source RDP server, allows unauthenticated remote attackers to exploit the software by sending specially crafted packets. This can cause the xrdp process to enter an infinite CPU-bound loop due to improper validation of the totalLength field within the RDP protocol control header. As a result, the xrdp service can become unavailable, leading to potential system-wide resource exhaustion when multiple malicious connections are initiated. This vulnerability was resolved in version 0.10.6.1.

Affected Version(s)

xrdp < 0.10.6.1

References

https://github.com/neutrinolabs/xrdp/security/advisories/...
x_refsource_CONFIRM
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.