driver blocklist

Microsoft’s quietly powerful Vulnerable Driver Blocklist now sits among the least flashy — but most consequential — defenses in Windows, preventing known‑weak kernel drivers from loading before they can be abused to escalate privileges, disable security software, or crash systems. m] Background...

Microsoft’s Windows already runs dozens of security checks before a program touches the kernel, but one of the least obvious — and quietly powerful — defenses is the Microsoft Vulnerable Driver Blocklist, a managed list that stops known-weak or malicious drivers from loading and protects the...

Note: below is a long-form, technically focused feature article about CVE-2025-53804. I drew on Microsoft’s official entry for this CVE and on Microsoft documentation and guidance about kernel-mode drivers and driver blocklists to explain the risk, likely exploitation paths, detection and...

Windows 11’s insistence that low-level drivers must be signed is the single most effective consumer-facing defense Microsoft has built for the Windows kernel — and it’s also one of the clearest examples of security that feels, at times, actively hostile to the people who own the hardware it runs...

Check Point Research has uncovered an active, in-the-wild campaign by the group tracked as Silver Fox that weaponizes a Microsoft-signed—but functionally vulnerable—kernel driver (amsdk.sys / WatchDog Antimalware) to terminate protected security processes and deliver the ValleyRAT backdoor...

Microsoft has recently released Windows 11 Build 26100.4762 (KB5062660) to Insiders in the Release Preview Channel, marking a significant update for users on Windows 11, version 24H2 (Build 26100). This build introduces a range of new features and improvements, some of which are being rolled out...

Here are the official highlights and improvements from the June 10, 2025—KB5060999 (OS Builds 22621.5472 and 22631.5472) cumulative update for Windows 11 Enterprise and Education, version 22H2, and Windows 11 version 23H2 (all editions): Highlights This update addresses security issues for...

Microsoft’s May 2025 security updates for Windows 10 and Windows 11 are more than a customary Patch Tuesday affair—they represent Microsoft’s ongoing battle to stay ahead of increasingly sophisticated cyber threats, respond to complex compatibility scenarios, and maintain a stable computing...

If you’ve ever woken up at 3 a.m. in a cold sweat because your Ubuntu-on-WSL workload suddenly lost access to the GPU, you’re not alone—and if you’re a Windows 10 user, the latest optional update KB5055612 is here to play digital sandman for your nightmares. With the precision of a patch surgeon...

Once again, Microsoft is determined to prove that Windows 11 is not a “one-and-done” affair but rather a living, breathing operating system that likes to knock gently on your update center window with new features, little tweaks, and—if you’re lucky—nothing requiring a system restore at 2 a.m...

Windows 10’s Latest Update KB5055612: A Major Boost in Stability and Security Microsoft’s commitment to maintaining and enhancing Windows 10 continues to shine with the recent release of update KB5055612, formally known as Build 19045.5794, tailored for Windows 10 version 22H2. This update is...

Microsoft has released Windows 10 Release Preview build 19045.5794 (KB5055612), introducing two key fixes: Graphics: Addressed a case-sensitive issue in Windows Subsystem for Linux 2 (WSL2) that could cause GPU paravirtualization support to fail. OS Security: Updated the Windows Kernel...

Windows 11's latest patch has stirred up a storm among Lenovo ThinkPad users, and it's a case of security measures going a bit overzealous. In a twist that could easily be mistaken for a plotline in a corporate thriller, Microsoft’s recent update now blocks certain BIOS update executables on...

A recent Windows 11 update has unexpectedly flagged a core Lenovo BIOS updating tool as risky—an ironic twist that’s caught both IT professionals and Lenovo users off-guard. In its bid to tighten security by updating the Vulnerable Driver Blocklist (known internally as DriverSiPolicy.p7b)...

Lenovo’s recent BIOS update hiccup on Windows 11 (and even Windows 10) has set off a flurry of activity among tech enthusiasts and IT professionals alike. The issue stems from Microsoft’s decision to bolster security by updating the Vulnerable Driver Blocklist, known internally as...

The time has come yet again for an important Windows 11 security update, and this one launches us into a new year with notable enhancements geared toward protecting your PC. Microsoft has officially rolled out the January 14, 2025—KB5050009 (OS Build 26100.2894) update. Whether you're a power...