Misconfigured Memcache applications can cause many private data to be leaked by attackers.
A weakness has been reported in memcached, which can be exploited by malicious people to disclose system information. The weakness is caused due to the application disclosing the content of /proc/self/maps if a stats maps command is received. This can be exploited to disclose e.g. the addresses of allocated memory regions.
Attackers can use your misconfigured Memcache application by impersonating you and access your private data.
Access restriction should be applied.