xrdp: xrdp is an open source RDP server
CVE-2026-33689 is fixed in xrdp on 1 platform, first by DEBIAN-CVE-2026-33689, released April 17, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xrdp · Debian 12.15 (bookworm) | 0.9.21.1-1+deb12u3 | DEBIAN-CVE-2026-33689 | Apr 17, 2026 |
| xrdp · Debian 13.5 (trixie) | 0.10.1-3.1+deb13u2 | DEBIAN-CVE-2026-33689 | Apr 17, 2026 |
| xrdp · Debian 14 | 0.10.6-1 | DEBIAN-CVE-2026-33689 | Apr 17, 2026 |
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