An improper restriction of excessive authentication attempts vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow local network authenticated administrators to perform an arbitrary number of authentication attempts via unspecified vectors. QuTScloud is not affected. We have already fixed the vulnerability in the following versions: QTS 5.2.0.2782 build 20240601 and later QuTS hero h5.2.0.2782 build 20240601 and later