CVE-2026-121961

FreeRDP before 3.32.2 contains a use-after-free vulnerability in the freerdp-proxy DRDYNVC tracker when intercepting the drdynvc channel. A malicious target server can repeatedly send CREATEREQUESTPDU for an active channel id, racing front DATA handling to free a borrowed context and crash the...

CVE-2026-121963

FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that allows malicious RDP servers to trigger freed callback access by closing the channel with queued audio PDUs. Attackers can send a training PDU then close the channel so the playback threa...

CVE-2026-121962

FreeRDP before 3.32.2 contains a heap buffer overflow in transportdefaultreadpdu when handling partial Early User Authorization reads during PROTOCOLHYBRIDEX CredSSP. A malicious RDP server can split the four-byte EUA result into short reads that advance the stream pointer beyond the 16 KiB...

CVE-2026-121964

FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpcclientrecvfragment writes BINDACK and ALTERCONTEXTRESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A...

CVE-2026-121956

FreeRDP before 3.32.2 contains a double free in the WinPR Kerberos SSPI retrieveSomeTgt function, which installs the krb5 default realm into a target principal that has an empty realm without taking ownership of it. Unauthenticated remote clients can send a crafted NLA/CredSSP u2u TGT request who...

CVE-2026-121959

FreeRDP before 3.32.2 contains an infinite loop vulnerability in websocketcontextread that fails to handle a zero BIO result with payload outstanding. A malicious RD Gateway can send a truncated WebSocket frame followed by a TLS closenotify, causing a client thread to spin and consume CPU until...

CVE-2026-121955

FreeRDP before 3.32.2 contains a use-after-free vulnerability in EmulateSCardReleaseContext that frees the emulated SCardContext before its worker thread is cancelled and joined. A malicious server can send ESTABLISHCONTEXT, a long-timeout GETSTATUSCHANGE, then RELEASECONTEXT smartcard IRPs to...

CVE-2026-121957

FreeRDP before 3.32.2 contains a use-after-free vulnerability that allows malicious RDP servers to corrupt client memory by racing the RDPGFX ResetGraphics handler against the planar bitmap decoder. Attackers can send ResetGraphics while concurrently sending compressed bitmaps of 32 bpp or more t...

CVE-2026-121958

FreeRDP through 3.32.1 has a heap out-of-bounds write in the RDPGFX client because the deletesurface callback truncates surface hash keys to 16 bits, leaving the surface table inconsistent so HashTableGetKeys writes past its allocated key array. A malicious or man-in-the-middle RDP server can...

CVE-2026-121960

FreeRDP before 3.32.2 contains a denial of service vulnerability in the NLA-enabled shadow server when a CredSSP TSRequest omits negoTokens. Unauthenticated attackers can send a crafted seven-byte TSRequest containing only the version field to trigger a fatal WINPRASSERT and abort the server...

CVE-2026-121950

FreeRDP before 3.32.2 does not check the product of surface dimensions in gdiCreateSurface when handling an RDPGFX CREATESURFACE PDU, causing an integer wrap and heap buffer overflow on 32-bit builds and an approximately 4 GiB allocation on 64-bit builds. A malicious RDP server can send a...

CVE-2026-121951

FreeRDP 3.0.0 before 3.32.2 server-side RDP peer input parsing skips the six-byte body of a slow-path input event with an unknown message type without checking it lies within the packet's declared length, causing a WinPR stream assertion failure. A remote RDP client with an active session can sen...

CVE-2026-121952

FreeRDP before 3.32.2 has an out-of-bounds write in the proxy because rdpreadbitmapcachev2capabilityset rejects only numCellCaches values above 5, yet the bitmap cache v2 cell array is later accessed at fixed indices 0 through 4. A client connecting to the proxy can declare fewer than five cell...

CVE-2026-121953

FreeRDP before 3.32.2 has a use-after-free in the client's rdpgfx dynamic virtual channel: a duplicate-name channel with a new ChannelId overwrites the listener's single callback slot, which rdpgfxonclose frees without clearing. A malicious RDP server can open and close such a channel, then send ...

CVE-2026-121954

FreeRDP before 3.32.2 has a heap out-of-bounds write in the planar codec because freerdpbitmapplanarcontextreset commits new dimensions before buffer reallocation succeeds, and a failed ResetGraphics is only logged. A malicious RDP server can send an oversized ResetGraphics PDU, then a GFX PLANAR...

EUVD-2026-116964

FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpcclientrecvfragment writes BINDACK and ALTERCONTEXTRESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A...

CVE-2026-121964 FreeRDP before 3.32.2 Heap Buffer Overflow via rpc_client_recv_fragment

FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpcclientrecvfragment writes BINDACK and ALTERCONTEXTRESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A...

CVE-2026-121964

FreeRDP versions before 3.32.2 are vulnerable to a heap-based buffer overflow in the RD Gateway RPC client . The root cause is located in the rpc_client_recv_fragment function, which fails to verify remaining capacity relative to the current stream position when writing BIND_ACK and ALTER_CONTEXT...

CVE-2026-121962

FreeRDP versions before 3.32.2 are vulnerable to a heap buffer overflow in the transport_default_read_pdu function. The issue occurs during PROTOCOL_HYBRID_EX CredSSP when handling partial Early User Authorization (EUA) reads. A malicious RDP server can split the four-byte EUA result into short r...

CVE-2026-121962 FreeRDP before 3.32.2 Heap Buffer Overflow via Early User Authorization Read

FreeRDP before 3.32.2 contains a heap buffer overflow in transportdefaultreadpdu when handling partial Early User Authorization reads during PROTOCOLHYBRIDEX CredSSP. A malicious RDP server can split the four-byte EUA result into short reads that advance the stream pointer beyond the 16 KiB...