CVE-2026-91945 FreeRDP before 3.31.0 Out-of-bounds Read via Smartcard ATR

FreeRDP versions before 3.31.0 contain an out-of-bounds read vulnerability in smartcard response decoders that fail to validate ATR length fields against fixed inline arrays. Authenticated RDP clients can send oversized ATR lengths in PAKIDCOREDEVICEIOCOMPLETION responses to trigger reads past...

CVE-2026-91945 FreeRDP before 3.31.0 Out-of-bounds Read via Smartcard ATR

FreeRDP versions before 3.31.0 contain an out-of-bounds read vulnerability in smartcard response decoders that fail to validate ATR length fields against fixed inline arrays. Authenticated RDP clients can send oversized ATR lengths in PAKIDCOREDEVICEIOCOMPLETION responses to trigger reads past...

PT-2026-92065

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description An information disclosure issue exists in the RDPGFX server's ResetGraphics PDU serializer. The component fails to initialize padding bytes within the fixed 340-byte wire format. This allows attacke...

CVE-2026-91950: Out-of-bounds Read

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdrdumppacket function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigg...

CVE-2026-91960: Integer Overflow or Wraparound

FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's StreamEnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer...

CVE-2026-91947: Concurrent Execution using Shared Resource with Improper Synchronization

FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences a channel pointer after releasing the synchronization lock. Authenticated clients can race AUDIN channel closure messages against DRDYNVC data parsing to trigger heap-use-after-fre...

CVE-2026-91946: Use of Uninitialized Resource

FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function...

PT-2026-92076

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description A use-after-free issue exists in the smartcard RDPDR device handler. This occurs when worker thread creation fails following device registration. An attacker can trigger this failure during channel...

PT-2026-92081

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description An integer overflow exists in the audin Apple backends when processing FramesPerPacket values from MSG SNDIN OPEN messages. An attacker can provide crafted FramesPerPacket values that cause the size...

PT-2026-92073

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description A null pointer dereference occurs in the gdi surface bits function when processing Surface Bits commands that use the NSCodec codec ID. A malicious RDP server can cause a client crash by sending a...

PT-2026-92080

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description A denial-of-service issue exists in the URBDRC control-transfer request path. The software fails to validate the OutputBufferSize variable before forwarding it to the libusb backend. A malicious RDP...

CVE-2026-91954: NULL Pointer Dereference

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-2026-91945: Out-of-bounds Read

FreeRDP versions before 3.31.0 contain an out-of-bounds read vulnerability in smartcard response decoders that fail to validate ATR length fields against fixed inline arrays. Authenticated RDP clients can send oversized ATR lengths in PAKIDCOREDEVICEIOCOMPLETION responses to trigger reads past...

CVE-2026-91962: Incorrect Calculation of Buffer Size

FreeRDP before 3.31.0 contains an integer overflow in the audin Apple backends when processing FramesPerPacket values from MSGSNDINOPEN messages. Attackers can supply crafted FramesPerPacket values that cause AudioQueueAllocateBuffer size computation to wrap, resulting in undersized buffer...

CVE-2026-91953: Buffer Copy without Checking Size of Input

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-2026-91961: Reachable Assertion

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...

PT-2026-92064

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.31.0 Description An out-of-bounds read occurs in smartcard response decoders due to a failure to validate ATR length fields against fixed inline arrays. Authenticated RDP clients can trigger this by sending oversize...

CVE-2026-91956: Out-of-bounds Read

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-2026-91946: Use of Uninitialized Resource

FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function...

CVE-2026-91955: Divide By Zero

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...