Before 3.32.2 Use-After-Free via rdpgfx Dynamic Virtual Channel Close
Not on CISA's list of exploited flaws, and not in the news we track.
9.8of 10, critical
Reading the vendor advisory
Fix it in your code
Each opens with a short prompt that points at Global Hack Map's public runbook for CVE-2026-121953. Nothing runs until you send it.
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 rdpgfx_on_close frees without clearing. A malicious RDP server can open and close such a channel, then send a PDU on the original channel to crash the client or potentially execute code.
You are affected if
The fix