An anonymous reader quotes a report from BleepingComputer: Two Google security experts have found a severe remote code execution (RCE) bug in the Windows OS, which they've described as "crazy bad." The two experts are Natalie Silvanovich and Tavis Ormandy, both working for Project Zero, a Google initiative for discovering and helping patch zero-days in third-party software products. The two didn't release in-depth details about the vulnerability, but only posted a few cryptic tweets regarding the issue. Drilled with questions by the Twitter's infosec community, Ormandy later revealed more details: the attacker and the victim don't necessarily need to be on the same LAN; the attack works on a default Windows install, meaning victims don't need to install extra software on their systems to become vulnerable; the attack is wormable (can self-replicate). The tweets came days before Microsoft's May 2017 Patch Tuesday, scheduled tomorrow, May 9. The researchers said a report is coming, alluding the vulnerability might be patched this month, and they'll be free to publish their findings.