CVE-2026-55193High· 8.8▾ TwilightFreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Sep 9.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Last analysed / modified upstream
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.
freerdp < 3.27.0Upgrade past the affected range:
freerdp 3.27.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-55194Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-55191Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-91964High· 8.8FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields
CVE-2026-55192High· 8.2FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-63633Critical· 9.8FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-114045High· 8.8FreeRDP before 3.32.1 Heap Buffer Overflow via rdpsnd_server_select_format