CVE-2023-40567

Status: ModifiedCritical (9.8)—

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the `clear_decompress_bands_data` function in which there is no offset validation. Abuse of this vulnerability may lead to an out of bounds write. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. there are no known workarounds for this vulnerability.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.50%
Percentile among all scored CVEs: 74
Score date: 10/8/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Debian — Debian Linux Fedoraproject — Fedora Freerdp — Freerdp

CWEs

CWE-787

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2023-40567",
  "cveTags": [],
  "metrics": {
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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      "value": "FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Write in the `clear_decompress_bands_data` function in which there is no offset validation. Abuse of this vulnerability may lead to an out of bounds write. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. there are no known workarounds for this vulnerability."
    },
    {
      "lang": "es",
      "value": "FreeRDP es una implementación gratuita del Protocolo de Escritorio Remoto (RDP), publicado bajo la licencia Apache. Las versiones afectadas están sujetas a una escritura fuera de límites (Out-Of-Bounds Write) en la función 'clear_decompress_bands_data' en la que no hay validación de desplazamiento. El abuso de esta vulnerabilidad puede conducir a una escritura fuera de límites. Este problema ha sido solucionado en las versiones 2.11.0 y 3.0.0-beta3. Se recomienda a los usuarios actualizar. No existen soluciones alternativas conocidas para esta vulnerabilidad."
    }
  ],
  "lastModified": "2026-06-17T06:18:30.267",
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