Windows 0-Day 'HiveLegacy' Drops the Same Day as Record Microsoft Patch Release

Ars Technica·medium signal

A Windows zero-day dubbed HiveLegacy was disclosed on the same day Microsoft shipped its largest-ever patch batch. Researchers describe it as a 'powerful primitive' likely chainable into additional exploitation paths beyond its initially demonstrated use. Anyone running Windows build agents or dev VMs should treat this as patch-now rather than patch-Tuesday-next.