“This is a fairly rapidly evolving case. Initial exploitation of this vulnerability was likely fairly limited in terms of targeting, but as more attackers learn to replicate exploitation, we will lik...

Microsoft Corp.’s server software was exploited by unidentified hackers, with analysts warning of widespread cybersecurity breaches across the globe.

“Hackers apparently reverse engineered our code and found some bug which we had already fixed,” the advisory warned, and they are “exploiting it for anyone who has not stayed current on new versions....