Initialization of a resource with an insecure default vulnerability in FutureNet NXR series, VXR series and WXR series provided by Century Systems Co., Ltd. allows a remote unauthenticated attacker to access telnet service unlimitedly.
https://www.centurysys.co.jp/backnumber/nxr_common/20240716-03.html
https://www.centurysys.co.jp/backnumber/nxr_common/20240716-01.html