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Lenovo has published a security advisory about the vulnerabilities explaining how they work: This time the vulnerabilities, which exist in the Driver Execution Environment (DXE) driver, allow threat actors to disable Secure Boot by modifying NVRAM variables. Similar to that, another new set of three vulnerabilities have been discovered again by Smolár in a bunch of Lenovo Windows 11 and Windows 10 notebooks. Earlier this year in April, a security researcher at ESET Martin Smolár, found that several Lenovo notebook models had a vulnerable UEFI.
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