CVE-2026-91963

FreeRDP versions 2.0.0 through 3.30.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel . A malicious RDP server can induce failing USB transfers, allowing it to read uninitialized heap memory from the client. This information disclosure can defea...

CVE-2026-91961

FreeRDP before 3.31.0 is affected by a denial-of-service vulnerability in the URBDRC (USB Redirection for Remote Desktop Connection) control-transfer request path. The flaw stems from a missing validation of OutputBufferSize before the value is forwarded to the libusb backend . A malicious RDP se...

CVE-2026-91961 FreeRDP before 3.31.0 Denial of Service via URBDRC

FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a control-transfer request with OutputBufferSize set to 65536, triggering a...

CVE-2026-91958 FreeRDP 3.11.0 through 3.30.0 Heap Buffer Overflow via Monitor Index

FreeRDP versions before 3.31.0 fail to validate MonitorIds array values when parsing RDP connection files, allowing unbounded array indexing in xfdetectmonitors. Attackers can craft a malicious RDP file with an out-of-range selectedmonitors value to trigger out-of-bounds heap read and write...

CVE-2026-91958

FreeRDP versions 3.11.0 through 3.30.0 fail to validate MonitorIds array values when parsing RDP connection files, causing unbounded array indexing in xf_detect_monitors . An attacker can craft a malicious RDP file with an out-of-range selectedmonitors value to trigger out-of-bounds heap read and...

EUVD-2026-78634

FreeRDP versions before 3.31.0 fail to validate MonitorIds array values when parsing RDP connection files, allowing unbounded array indexing in xfdetectmonitors. Attackers can craft a malicious RDP file with an out-of-range selectedmonitors value to trigger out-of-bounds heap read and write...

CVE-2026-91958 FreeRDP 3.11.0 through 3.30.0 Heap Buffer Overflow via Monitor Index

FreeRDP versions before 3.31.0 fail to validate MonitorIds array values when parsing RDP connection files, allowing unbounded array indexing in xfdetectmonitors. Attackers can craft a malicious RDP file with an out-of-range selectedmonitors value to trigger out-of-bounds heap read and write...

CVE-2026-91955 FreeRDP before 3.31.0 Denial of Service via Desktop Dimensions

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized dimensions to trigger division-by-zero or assertion failures in...

CVE-2026-91955 FreeRDP before 3.31.0 Denial of Service via Desktop Dimensions

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized dimensions to trigger division-by-zero or assertion failures in...

EUVD-2026-78631

FreeRDP before 3.31.0 fails to validate client-supplied DesktopWidth and DesktopHeight values during GCC negotiation, allowing remote attackers to crash the server. Attackers can send crafted RDP packets with zero or oversized dimensions to trigger division-by-zero or assertion failures in...

CVE-2026-91956

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC (USB device redirection) channel's func_get_ep_desc function. The root cause is an index mismatch : the function indexes interface arrays by position rather than by the protocol field InterfaceNumber. A malicious RDP...

CVE-2026-91956 FreeRDP before 3.31.0 Out-of-Bounds Read via URBDRC

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's funcgetepdesc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECTCONFIGURATION message with permuted InterfaceNumbe...

CVE-2026-91954

FreeRDP versions before 3.31.0 contain a null pointer dereference in the gdi_surface_bits function. A malicious RDP server can crash a FreeRDP client by sending a crafted Surface Bits command that claims to use the NSCodec codec ID, even when the codec is disabled on the client side. The impact i...

CVE-2026-91954 FreeRDP before 3.31.0 NULL Pointer Dereference via NSCodec

FreeRDP before 3.31.0 contains a null pointer dereference vulnerability in gdisurfacebits when processing Surface Bits commands with NSCodec codec ID. A malicious RDP server can crash a FreeRDP client by sending a crafted Surface Bits command claiming to use NSCodec, even when the codec is disabl...

CVE-2026-91953

FreeRDP versions before 3.31.0 contain a heap buffer overflow in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle attacker can exploit this by sending a crafted Serve...

EUVD-2026-78809

FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pooldecoderect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode pat...

EUVD-2026-78810

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in negosendnegotiationrequest that fails to validate the LBLOADBALANCEINFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an...

CVE-2026-91952 FreeRDP before 3.31.0 Denial of Service via pool_decode_rect

FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pooldecoderect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode pat...

CVE-2026-91952 FreeRDP before 3.31.0 Denial of Service via pool_decode_rect

FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pooldecoderect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode pat...

CVE-2026-91953 FreeRDP before 3.31.0 Heap Buffer Overflow via LB_LOAD_BALANCE_INFO

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in negosendnegotiationrequest that fails to validate the LBLOADBALANCEINFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an...