---
cve: "CVE-2026-33984"
severity: "HIGH"
cvss: 7.5
epss: "40%"
vendor: "FreeRDP"
kev: false
exploited: false
published: "2026-03-30 22:16:19"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T08:27:36+02:00"
---

# CVE-2026-33984

> 7.5 HIGH · 🧪 PoC

## Beschreibung

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- dc7fdb165095139be779a4000199bc1706b06ad5 (Commit)

## Referenzen

- <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6>
- <https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5>
- <https://access.redhat.com/errata/RHSA-2026:10709>
- <https://access.redhat.com/errata/RHSA-2026:11332>
- <https://access.redhat.com/errata/RHSA-2026:11333>
- <https://access.redhat.com/errata/RHSA-2026:11336>
- <https://access.redhat.com/errata/RHSA-2026:11649>
- <https://access.redhat.com/errata/RHSA-2026:11651>
- <https://access.redhat.com/errata/RHSA-2026:12359>
- <https://access.redhat.com/errata/RHSA-2026:12388>
- <https://access.redhat.com/errata/RHSA-2026:19033>
- <https://access.redhat.com/errata/RHSA-2026:19349>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33984) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_