CVE-2026-42218

XRDP is vulnerable to a server timing attack, leading to user enumeration

MEDIUM
5.3
CVSS Score
Published: July 20, 2026 at 04:44 PM UTC
Updated: October 24, 2026 at 08:10 PM UTC
1 product affected across 1 vendorXrdp

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure via username enumeration. This issue has been fixed in version 0.10.6.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.10.6.1
Affected range stops below 0.10.6.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3wr5-fwmh-qh34
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-204

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