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New UEFI Firmware Flaws Reported in Several Lenovo Notebook Models

PC maker Lenovo has addressed yet another set of three shortcomings in the Unified Extensible Firmware Interface (UEFI) firmware affecting several Yoga, IdeaPad, and ThinkBook devices.
“The vulnerabilities allow disabling UEFI Secure Boot or restoring factory default Secure Boot databases (incl. dbx): all simply from an OS,” Slovak cybersecurity firm ESET explained in a series of tweets.
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