---
cve: "CVE-2026-33689"
severity: "HIGH"
cvss: 8.7
epss: "48%"
vendor: "neutrinolabs"
kev: false
exploited: false
published: "2026-04-17 21:16:32"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T04:56:30+02:00"
---

# CVE-2026-33689

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 440a538149561ec8e8e57552ab8f2e0e3f273cd5 (Commit)

## Referenzen

- <https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-92mr-6wpp-27jj>
- <https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33689) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_