CVE-2026-109246 — FreeRDP before 3.32.0 Shadow Server Divide-by-Zero via Frame Acknowledge PDU
FreeRDP before 3.32.0 contains a divide-by-zero vulnerability in the freerdp-shadow-cli shadow server: the frame id in a client's Frame Acknowledge PDU is stored without a range…
Published: 2026-10-12 · CVSS: 7.1 · CVSS 4.0
FreeRDP before 3.32.0 contains a divide-by-zero vulnerability in the freerdp-shadow-cli shadow server: the frame id in a client's Frame Acknowledge PDU is stored without a range check, so the in-flight frame count in shadow_encoder_inflight_frames() can underflow. An authenticated client can acknowledge a frame id one greater than the last frame sent, causing shadow_encoder_create_frame_id() to divide by zero (SIGFPE) and terminate the process, disconnecting all viewers.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7