Astra Linux – Vulnerability in freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.26.0, a malicious RDP client could trigger a heap-buffer-overflow write in FreeRDP’s server-side clipboard cliprdr channel by sending a CBCLIPCAPS PDU with a too-small capabilitySetLength. This could cause the...

Important: freerdp

Issue Overview: FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdiCacheToSurface that allows remote attackers to write out-of-bounds heap memory. The vulnerability occurs because rectangle validation clamps coordinates to UINT16MAX but performs copy operations using...

CVE-2026-44420

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard cliprdr channel by sending a CBCLIPCAPS PDU with a too-small capabilitySetLength. This can crash the server process...

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-2026-25959: Use After Free

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,...