CVE-2026-55193 FreeRDP: Heap-buffer-overflow write in TS Gateway RPC fragment receive due to uncapped bind_ack max_xmit_frag

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled maxxmitfrag value in libfreerdp/core/gateway/rpcbind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise...

EUVD-2026-62664

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled maxxmitfrag value in libfreerdp/core/gateway/rpcbind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise...

CVE-2026-55193

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled maxxmitfrag value in libfreerdp/core/gateway/rpcbind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise...

CVE-2026-55193

FreeRDP clients using TS Gateway assign a server-controlled max_xmit_frag value (up to 65535) to rpc->max_recv_frag in rpc_bind.c without capping it to the 4088-byte ReceiveFragment buffer, so rpc_channel_read in rpc.c writes up to 65535 bytes, overflowing by up to 61447 attacker-controlled by...

CVE-2026-55564

CVE-2026-55564 is an out-of-bounds heap read in FreeRDP (a free RDP client implementation) affecting versions prior to 3.27.0 . The root cause is in glyph_cache_get() in libfreerdp/cache/glyph.c, which uses > instead of >= when bounds-checking the index against cache->number. A malicious...

CVE-2026-55564 FreeRDP: Out-of-bounds read in glyph_cache_get via crafted glyph fragments

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyphcacheget function in libfreerdp/cache/glyph.c checks whether index is greater than cache-number instead of greater than or equal to it. A malicious RDP server can use GLYPHFRAGMENTUSE replay in...

CVE-2026-55564 FreeRDP: Out-of-bounds read in glyph_cache_get via crafted glyph fragments

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyphcacheget function in libfreerdp/cache/glyph.c checks whether index is greater than cache-number instead of greater than or equal to it. A malicious RDP server can use GLYPHFRAGMENTUSE replay in...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191 FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-55191

FreeRDP clients prior to 3.27.0 are vulnerable to a heap-buffer-overflow write in the RDPGFX AVC444 codec path. In libfreerdp/codec/h264.c, the function avc444_ensure_buffer() computes the intermediate YUV444 buffer size using 32-bit multiplication (piDstStride[x] * padDstHeight). A malicious RDP...

EUVD-2026-62660

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444ensurebuffer. A malicious R...

CVE-2026-74498

A flaw was found in the Linux kernel's ALSA Advanced Linux Sound Architecture USB audio subsystem. When a USB audio endpoint requests full packet transfers using the fillmax descriptor flag, the system allocates an undersized Direct Memory Access DMA buffer. This allows a malicious USB device to...

CVE-2026-75143

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader libavformat/librist.c. libristread ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination...

CVE-2026-75141

FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers...

CVE-2026-75144

FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer libavformat/rtpencvc2hq.c that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a...

CVE-2026-70628

A flaw was found in FFmpeg. An attacker could exploit a signed integer overflow vulnerability within the DVB subtitle parser by providing a specially crafted WTV Windows Recorded TV Show file. This overflow can lead to a heap buffer overflow, enabling out-of-bounds memory writes. The consequence ...

CVE-2026-70632

A flaw was found in FFmpeg. This out-of-bounds heap write vulnerability exists within the native GoPro CineForm HD CFHD decoder. A remote attacker can exploit this by providing a specially crafted AVI Audio Video Interleave file during stream analysis. This can lead to memory corruption and may b...

CVE-2026-64830

A flaw was found in FFmpeg, a widely used multimedia framework. This vulnerability, a heap buffer overflow in the VobSub subtitle demuxer, allows a remote attacker to corrupt memory. By providing a specially crafted subtitle file, an attacker can trigger unbounded writes, which could lead to...