xrdp: xrdp is an open source RDP server
CVE-2026-55645 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.
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xrdp · Debian 12.15 (bookworm) | 0.9.21.1-1+deb12u3 | DEBIAN-CVE-2026-55645 | Aug 1, 2026 |
| xrdp · Debian 13.5 (trixie) | 0.10.1-3.1+deb13u2 | DEBIAN-CVE-2026-55645 | Aug 1, 2026 |
| xrdp · Debian 14 | 0.10.6.1-2 | DEBIAN-CVE-2026-55645 | Aug 1, 2026 |
| xrdp · Fedora 43 | 1:0.10.6.1-3.fc43 | FEDORA-2026-952A486B39 | Jul 17, 2026 |
| xrdp-debuginfo · Fedora 43 | 1:0.10.6.1-3.fc43 | FEDORA-2026-952A486B39 | Jul 17, 2026 |
| xrdp-debugsource · Fedora 43 | 1:0.10.6.1-3.fc43 | FEDORA-2026-952A486B39 | Jul 17, 2026 |
| xrdp-devel · Fedora 43 | 1:0.10.6.1-3.fc43 | FEDORA-2026-952A486B39 | Jul 17, 2026 |
| xrdp-selinux · Fedora 43 | 1:0.10.6.1-3.fc43 | FEDORA-2026-952A486B39 | Jul 17, 2026 |
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