Talos has been monitoring the amount of systems that were vulnerable as well as the rate at which they have been patched. Memcached is a high performance object caching server intended for speeding up dynamic web applications and is used by some of the most popular Internet websites. All three vulnerabilities are due to integer overflows leading to controlled heap buffer overflows and due to the nature of the protocol can be abused for sensitive memory disclosure which can lead to straightforward and reliable exploitation. The vendor was notified and promptly issued a patch that we have verified as sufficient. Major Linux distributions issued updates and advisories of their own.”]
Source: https://blog.talosintelligence.com/2017/07/memcached-patch-failure.html