CVE-2026-67303 - FreeRDP before 3.29.0 Denial of Service via serial DeviceControl

CVE-2026-67303 - FreeRDP before 3.29.0 Denial of Service via serial DeviceControl

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/01/2026 - 16:08
CVE ID :CVE-2026-67303
Published : Aug. 1, 2026, 12:22 p.m. | 31 minutes ago
Description :FreeRDP before 3.29.0 contains a reachable assertion (WINPR_ASSERT(OutputBufferLength == BytesReturned)) in serial_process_irp_device_control() in channels/serial/client/serial_main.c. When serial device redirection is enabled and a server-controlled IRP_MJ_DEVICE_CONTROL request specifies an unsupported IOCTL with a non-zero OutputBufferLength, CommDeviceIoControl() can fail with BytesReturned = 0, causing the mismatch to trigger the assertion and abort the client process (denial of service).
Severity: 5.3 | MEDIUM
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