---
cve: "CVE-2026-23948"
severity: "MEDIUM"
cvss: 6.9
epss: "47%"
vendor: "FreeRDP"
kev: false
exploited: false
published: "2026-02-09 19:15:47"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T08:47:17+02:00"
---

# CVE-2026-23948

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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)

- e3ef4c71138f76516299cb3637d2d0c59b2a3737 (Commit)
- 4d44e3c097656a8b9ec696353647b0888ca45860 (Commit)

## Referenzen

- <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5>
- <https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-23948) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_