static void press_key(VncState *vs, int keysym)
{
    int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
    qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, true);
    qemu_input_event_send_key_delay(0);
    qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
    qemu_input_event_send_key_delay(0);
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.