Microsoft issued an emergency security update on Monday to plug Intel Corp's buggy Spectre firmware patch after the chipmaker's fix caused computers to reboot more often than normal.

Microsoft said it was rolling out an out-of-band update that specifically disables Intel's Spectre variant 2 patch.

The latest update comes nearly four weeks after Intel confirmed that its chips were impacted by vulnerabilities known as Spectre and Meltdown, which make data on affected computers susceptible to espionage.