CVE-2026-56297
Full vulnerability record from the local CVENow database.
Description
FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.
Severity
HIGH
CVSS score
8.3
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-08 14:17:16.360000
Last modified
2026-10-25 20:10:00.147000
View original CVE JSON
{
"id": "CVE-2026-56297",
"sourceIdentifier": "[email protected]",
"published": "2026-07-08T14:17:16.360",
"lastModified": "2026-10-25T20:10:00.147",
"vulnStatus": "Analyzed",
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"value": "FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service."
},
{
"lang": "es",
"value": "FreeRDP anterior a la versión 3.22.0 contiene una vulnerabilidad de uso después de liberación en dvcman_channel_close y dvcman_call_on_receive debido a una sincronización inadecuada del acceso a channel_callback. Un servidor RDP malicioso puede desencadenar una condición de carrera al enviar mensajes DYNVC_DATA y DYNVC_CLOSE concurrentemente, causando un uso después de liberación en el heap en el hilo del cliente drdynvc y potencialmente permitiendo la ejecución remota de código o la denegación de servicio."
}
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"affected": [
{
"source": "[email protected]",
"affectedData": [
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