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New Lenovo UEFI firmware updates fix Secure Boot bypass flaws

Summary by BleepingComputer
Lenovo is warning about high-severity BIOS flaws that could allow attackers to potentially bypass Secure Boot in all-in-one desktop PC models that use customized Insyde UEFI (Unified Extensible Firmware Interface).

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Certain Lenovo PCs have dangerous vulnerabilities in the firmware. Which models are affected and what to do.

Lenovo is warning users of various Ideacentre and Lenovo Yoga all-in-one laptops that several security vulnerabilities have been discovered in their firmware. The support notice states that these vulnerabilities could allow attackers to inject malicious code and execute it in System Management Mode (SMM). This access often goes undetected and is difficult to reverse, as it involves a privilege level even higher than the kernel level. Even a comp…

Different all-in-one PC models from Lenovo are vulnerable. The description of the gaps suggests leveraging Secure Boot.

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BleepingComputer broke the news in on Wednesday, July 30, 2025.
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