CVE-2026-26271

FreeRDP (Remote Desktop Protocol client) is affected by CVE-2026-26271 due to a buffer overread in freerdp_image_copy_from_icon_data() (libfreerdp/codec/color.c). The vulnerability is exploitable by crafted RDP Window Icon data and is reachable over the network when a client processes icon data f...

CVE-2026-26271

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in freerdpimagecopyfromicondata libfreerdp/codec/color.c can be triggered by crafted RDP Window Icon TSICONINFO data. The bug is reachable over the network when a client processes icon data...

CVE-2026-26271 Buffer Overread in FreeRDP Icon Processing

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in freerdpimagecopyfromicondata libfreerdp/codec/color.c can be triggered by crafted RDP Window Icon TSICONINFO data. The bug is reachable over the network when a client processes icon data...

CVE-2026-26271

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in freerdpimagecopyfromicondata libfreerdp/codec/color.c can be triggered by crafted RDP Window Icon TSICONINFO data. The bug is reachable over the network when a client processes icon data...

CVE-2026-25997 FreeRDP has heap-use-after-free in xf_clipboard_format_equal

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfclipboardformatequal reads freed lastSentFormats memory because xfclipboardformatsfree called from the cliprdr channel thread during auto-reconnect frees the array while the X11 event thread concurrently...

CVE-2026-25997

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfclipboardformatequal reads freed lastSentFormats memory because xfclipboardformatsfree called from the cliprdr channel thread during auto-reconnect frees the array while the X11 event thread concurrently...

CVE-2026-25997 FreeRDP has heap-use-after-free in xf_clipboard_format_equal

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfclipboardformatequal reads freed lastSentFormats memory because xfclipboardformatsfree called from the cliprdr channel thread during auto-reconnect frees the array while the X11 event thread concurrently...

CVE-2026-25997 FreeRDP has heap-use-after-free in xf_clipboard_format_equal

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfclipboardformatequal reads freed lastSentFormats memory because xfclipboardformatsfree called from the cliprdr channel thread during auto-reconnect frees the array while the X11 event thread concurrently...

EUVD-2026-8737

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfclipboardformatequal reads freed lastSentFormats memory because xfclipboardformatsfree called from the cliprdr channel thread during auto-reconnect frees the array while the X11 event thread concurrently...

CVE-2026-25959 FreeRDP has heap-use-after-free in xf_cliprdr_provide_data_

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfcliprdrprovidedata passes freed pDstData to XChangeProperty because the cliprdr channel thread calls xfcliprdrserverformatdataresponse which converts and uses the clipboard data without holding any lock,...

CVE-2026-25959

FreeRDP prior to 3.23.0 is vulnerable to CVE-2026-25959 via the xf_cliprdr_provide_data_ path: the cliprdr server formats clipboard data without holding a lock, while the X11 event thread can concurrently free the same data (xf_cached_data_free) in HashTable_Clear, causing a heap-use-after-free. ...

CVE-2026-25959 FreeRDP has heap-use-after-free in xf_cliprdr_provide_data_

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfcliprdrprovidedata passes freed pDstData to XChangeProperty because the cliprdr channel thread calls xfcliprdrserverformatdataresponse which converts and uses the clipboard data without holding any lock,...

CVE-2026-25955 FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfAppUpdateWindowFromSurface reuses a cached XImage whose data pointer references a freed RDPGFX surface buffer, because gdiDeleteSurface frees surface-data without invalidating the appWindow-image that...

CVE-2026-25955 FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfAppUpdateWindowFromSurface reuses a cached XImage whose data pointer references a freed RDPGFX surface buffer, because gdiDeleteSurface frees surface-data without invalidating the appWindow-image that...

CVE-2026-25955 FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfAppUpdateWindowFromSurface reuses a cached XImage whose data pointer references a freed RDPGFX surface buffer, because gdiDeleteSurface frees surface-data without invalidating the appWindow-image that...

CVE-2026-25955

CVE-2026-25955 is a vulnerability in FreeRDP (prior to 3.23.0) where the function xf_AppUpdateWindowFromSurface reuses a cached XImage that points to freed memory in an RDPGFX surface buffer. The root cause is that gdi_DeleteSurface frees surface->data without invalidating the aliasing appWind...

CVE-2026-25954

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfrailserverlocalmovesize dereferences a freed xfAppWindow pointer because xfrailgetwindow returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the wind...

CVE-2026-25954 FreeRDP has heap-use-after-free in xf_rail_server_local_move_size

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfrailserverlocalmovesize dereferences a freed xfAppWindow pointer because xfrailgetwindow returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the wind...

CVE-2026-25954 FreeRDP has heap-use-after-free in xf_rail_server_local_move_size

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfrailserverlocalmovesize dereferences a freed xfAppWindow pointer because xfrailgetwindow returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the wind...

EUVD-2026-8734

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, xfrailserverlocalmovesize dereferences a freed xfAppWindow pointer because xfrailgetwindow returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the wind...