CVE-2026-121405

A flaw was found in FreeRDP. When serial device redirection is enabled, a malicious Remote Desktop Protocol RDP server can send a crafted serial device-control request specifying an excessively large output buffer length. Because FreeRDP fails to limit this buffer length before allocating memory,...

CVE-2026-121405

FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRPMJDEVICECONTROL request with IOCTLUSBPRINTGET1284ID and a...

EUVD-2026-115937

FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRPMJDEVICECONTROL request with IOCTLUSBPRINTGET1284ID and a...

freerdp: freerdp: Denial of Service via file descriptor exhaustion in serial device handling

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can trigger a Denial of Service DoS by sending repeated serial device creation requests when serial port redirection is enabled. Because FreeRDP fails to release previous communication handles before allocating new ones,...

CVE-2026-121405: FreeRDP: FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious…

FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRPMJDEVICECONTROL request with IOCTLUSBPRINTGET1284ID and a...

Linux Distros Unpatched Vulnerability : CVE-2026-121405

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory...

Astra Linux – vulnerability in freerdp3

FreeRDP versions prior to 3.29.0 contain a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned within serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an...

CVE-2026-110834

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol RDP server can cause a Denial of Service DoS by sending read or write requests for a redirected serial device before the device is opened or after it has been closed. Because FreeRDP does not verify that the serial communication...

EUVD-2026-84512

Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability that allows authenticated attackers to potentially execute arbitrary code by exploiting an undocumented mfc...

CVE-2026-67303

A flaw was found in FreeRDP. When serial device redirection is active, a malicious server can send a crafted device control request. If this request specifies an unsupported operation with a non-zero output buffer, it can cause the FreeRDP client process to unexpectedly terminate. This leads to a...

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

FreeRDP before 3.29.0 contains a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned in serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an unsupported IOCTL...

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

FreeRDP before 3.29.0 contains a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned in serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an unsupported IOCTL...

CVE-2026-67303

FreeRDP before 3.29.0 contains a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned in serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an unsupported IOCTL...

CVE-2026-67303

FreeRDP vulnerability CVE-2026-67303 affects FreeRDP before 3.29.0. 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. This mismat...

CVE-2026-67303: Reachable Assertion

FreeRDP before 3.29.0 contains a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned in serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an unsupported IOCTL...

CVE-2026-63932 iio: chemical: mhz19b: reject oversized serial replies

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: mhz19b: reject oversized serial replies mhz19breceivebuf appends each serdev chunk into the fixed MHZ19BCMDSIZE receive buffer and advances bufidx by len without checking that the chunk fits in the remaining space....

PT-2026-61215

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory corruption issue exists in the mct u232 USB serial driver. The driver overrides the maximum transfer size for a specific device that accepts 16 byte packets for its 32 byte...

CVE-2026-43098

In the Linux kernel, the following vulnerability has been resolved: nfc: s3fwrn5: allocate rx skb before consuming bytes s3fwrn82uartread reports the number of accepted bytes to the serdev core. The current code consumes bytes into recvskb and may already deliver a complete frame before allocatin...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003146)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003146 advisory. In changeportsettings in drivers/usb/serial/ioti.c in the Linux kernel before 4.11.3, local users could cause a denial of service by division-by-zero in the serial...

CVE-2025-15017

A vulnerability exists in serial device servers where active debug code remains enabled in the UART interface. An attacker with physical access to the device can directly connect to the UART interface and, without authentication, user interaction, or execution conditions, gain unauthorized access...