# CVE-2026-41521: xrdp: xrdp is an open source RDP server

CVE-2026-41521 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: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-41521
- Priority: Urgent
- CVSS: 9.1 (critical)
- EPSS: 0.0067
- 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 an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an integer overflow during memory buffer size calculation, resulting in an undersized allocation. Subsequent processing of the incoming image data using the original oversized parameters leads to an out-of-bounds read. An unauthenticated remote attacker could exploit this flaw to disclose sensitive information from the heap memory or cause a denial of service (DoS) via a process crash. This issue has been fixed in version 0.10.6.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xrdp Debian 12.15 (bookworm) | 0.9.21.1-1+deb12u3 | [DEBIAN-CVE-2026-41521](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41521.md) | Aug 1, 2026 |
| Linux | xrdp Debian 13.5 (trixie) | 0.10.1-3.1+deb13u2 | [DEBIAN-CVE-2026-41521](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41521.md) | Aug 1, 2026 |
| Linux | xrdp Debian 14 | 0.10.6.1-2 | [DEBIAN-CVE-2026-41521](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41521.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 2026-11-08T19:12:23Z 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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