---
cve: "CVE-2026-57156"
severity: "HIGH"
cvss: 8.6
epss: "42%"
vendor: "FreeRDP"
kev: false
exploited: false
published: "2026-07-10 20:16:48"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T06:33:45+02:00"
---

# CVE-2026-57156

> 8.6 HIGH · 🧪 PoC

## Beschreibung

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 5370fb26fbf034ecd11d3026b6ad639b5fff493f (Commit)
- 487f35daccb36a6224e530dcd8fa60850825f823 (Commit)

## Referenzen

- <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7>
- <https://github.com/FreeRDP/FreeRDP/pull/12938>
- <https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823>
- <https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-57156) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_