# CVE-2026-42218: xrdp: xrdp is an open source RDP server

CVE-2026-42218 is fixed in 5 products on 1 platform, first by FEDORA-2026-952A486B39, released July 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-42218
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0042
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 17, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xrdp Debian 13.5 (trixie) | 0.10.1-3.1+deb13u2 | [DEBIAN-CVE-2026-42218](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42218.md) | Aug 1, 2026 |
| Linux | xrdp Debian 14 | 0.10.6.1-2 | [DEBIAN-CVE-2026-42218](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42218.md) | Aug 1, 2026 |
| Linux | xrdp Fedora 43 | 1:0.10.6.1-3.fc43 | [FEDORA-2026-952A486B39](https://patchblox.com/security/data/fix/linux/fedora-2026-952a486b39.md) | Jul 17, 2026 |
| Linux | xrdp-debuginfo Fedora 43 | 1:0.10.6.1-3.fc43 | [FEDORA-2026-952A486B39](https://patchblox.com/security/data/fix/linux/fedora-2026-952a486b39.md) | Jul 17, 2026 |
| Linux | xrdp-debugsource Fedora 43 | 1:0.10.6.1-3.fc43 | [FEDORA-2026-952A486B39](https://patchblox.com/security/data/fix/linux/fedora-2026-952a486b39.md) | Jul 17, 2026 |
| Linux | xrdp-devel Fedora 43 | 1:0.10.6.1-3.fc43 | [FEDORA-2026-952A486B39](https://patchblox.com/security/data/fix/linux/fedora-2026-952a486b39.md) | Jul 17, 2026 |
| Linux | xrdp-selinux Fedora 43 | 1:0.10.6.1-3.fc43 | [FEDORA-2026-952A486B39](https://patchblox.com/security/data/fix/linux/fedora-2026-952a486b39.md) | Jul 17, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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