static void vnc_listen_read(void *opaque, bool websocket)
{
    VncDisplay *vs = opaque;
    struct sockaddr_in addr;
    socklen_t addrlen = sizeof(addr);
    int csock;

    /* Catch-up */
    graphic_hw_update(NULL);
#ifdef CONFIG_VNC_WS
    if (websocket) {
        csock = qemu_accept(vs->lwebsock, (struct sockaddr *)&addr, &addrlen);
    } else
#endif /* CONFIG_VNC_WS */
    {
        csock = qemu_accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
    }

    if (csock != -1) {
        socket_set_nodelay(csock);
        vnc_connect(vs, csock, false, websocket);
    }
}

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