If your device manufacturer is not listed in the table, contact your OEM directly. Updates for Microsoft Surface devices are available to customers through Windows Update. For a list of available Surface device firmware microcode updates, see KB If your device is not from Microsoft, apply firmware updates from the device manufacturer.
Contact your device manufacturer for more information. Addressing a hardware vulnerability by using a software update presents significant challenges and mitigations for older operating systems and can require extensive architectural changes.
We are continuing to work with affected chip manufacturers to investigate the best way to provide mitigations. This may be provided in a future update. Replacing older devices that are running these older operating systems and also updating antivirus software should address the remaining risk.
Products that are currently out of both mainstream and extended support will not receive these system updates. We recommend customers update to a supported system version. Speculative execution side-channel attacks exploit CPU behavior and functionality.
CPU manufacturers must first determine which processors may be at risk, and then notify Microsoft. In many cases, corresponding operating system updates will also be required to provide customers more comprehensive protection. We recommend that security-conscious Windows CE vendors work with their chip manufacturer to understand the vulnerabilities and applicable mitigations. Windows operating systems that are currently out of support or those entering end of service EOS in Although Windows XP-based systems are affected products, Microsoft is not issuing an update for them because the comprehensive architectural changes that would be required would jeopardize system stability and cause application compatibility problems.
We recommend that security-conscious customers upgrade to a newer supported operating system to keep pace with the changing security threat landscape and benefit from the more robust protections that newer operating systems provide.
After applying the February Windows Security Update , HoloLens customers do not have to take any additional action to update their device firmware.
These mitigations will also be included in all future releases of Windows 10 for HoloLens. For your device to be fully protected, you should install the latest Windows operating system security updates for your device and applicable firmware microcode updates from your device manufacturer. These updates should be available on your device manufacturer's website.
Operating system and firmware updates can be installed in either order. You will have to update both your hardware and your software to address this vulnerability. You will also have to install applicable firmware microcode updates from your device manufacturer for more comprehensive protection. In each Windows 10 feature update, we build the latest security technology deep into the operating system, providing defense-in-depth features that prevent entire classes of malware from impacting your device.
Feature update releases are targeted twice a year. In each monthly quality update, we add another layer of security that tracks emerging and changing trends in malware to make up-to-date systems safer in the face of changing and evolving threats. Microsoft has lifted the AV compatibility check for Windows security updates for supported versions of Windows 10, Windows 8.
Make sure that your devices are up-to-date by having the latest security updates from Microsoft and your hardware manufacturer. Continue to practice sensible caution when you visit websites of unknown origin, and do not remain on sites that you do not trust. Microsoft recommends that all customers protect their devices by running a supported antivirus program. Customers can also take advantage of built-in antivirus protection: Windows Defender for Windows 10 devices, or Microsoft Security Essentials for Windows 7 devices.
To help avoid adversely affecting customer devices, the Windows security updates released in January or February have not been offered to all customers. For details, see the Microsoft Knowledge Base article On January 22, Intel recommended that customers stop deploying the current microcode version on affected processors while they perform additional testing on the updated solution.
We understand that Intel is continuing to investigate the potential impact of the current microcode version, and we encourage customers to review their guidance on an ongoing basis to inform their decisions. This update covers Windows 7 SP1 , Windows 8. If you are running an impacted device, this update can be applied by downloading it from the Microsoft Update Catalog website. As of January 25, there are no known reports to indicate that this Spectre Variant 2 CVE has been used to attack customers.
We recommend that, when appropriate, Windows customers re-enable the mitigation against CVE when Intel reports that this unpredictable system behavior has been resolved for your device. Security Only updates are not cumulative. Depending on the operating system version you are running, you must install the all released Security Only updates to be protected against these vulnerabilities.
We recommend installing these Security Only updates in the order of release. In fact, it does not. Security update was a specific fix to prevent unpredictable system behaviors, performance issues, and unexpected restarts after the installation of microcode. Applying the February security updates on Windows client operating systems enables all three mitigations.
On Windows server operating systems, you still have to enable the mitigations after appropriate testing is performed. See Microsoft Knowledge Base article for more information. These are available from the OEM firmware channel.
Intel recently announced they have completed their validations and started to release microcode for newer CPU platforms. The microcode update is also available directly from the Update Catalog if it was not installed on the device prior to upgrading the system. Microsoft Security Research and Defense Blog.
Developer Guidance for Speculative Store Bypass. For more information and to obtain the PowerShell script, see KB We are not currently aware of any instances of BCBS in our software, but we are continuing to research this vulnerability class and will work with industry partners to release mitigations as required.
See also Microsoft Knowledge Base Article for more information about affected Surface products and availability of the microcode updates. As soon as we became aware of this issue, we worked quickly to address it and release an update.
We strongly believe in close partnerships with both researchers and industry partners to make customers more secure, and did not publish details until Tuesday, August 6, consistent with coordinated vulnerability disclosure practices. Windows 10 Windows 10 Mobile Windows 8. For more information about this issue and recommended actions, see the following Security Advisory: ADV Microsoft Guidance to mitigate Microarchitectural Data Sampling vulnerabilities. Retpoline mitigations for Spectre, variant 2 enabled by default on Windows 10, version devices.
Intel microcode updates for Windows 10, version and Windows Server, version Windows operating system updates for bit x86 systems. Windows operating system updates for bit x64 systems. Users must apply this update to be fully protected against this vulnerability if their computers were updated on or after January by applying any of the updates that are listed in the following Knowledge Base article: Windows kernel update for CVE Microsoft blogs that discuss speculative execution side-channel vulnerabilities.
My operating system OS is not listed. When can I expect a fix to be released? Notes: Products that are currently out of both mainstream and extended support will not receive these system updates. Where can I find Microsoft HoloLens operating system and firmware microcode updates?
Where can I find Windows 10 Mobile firmware microcode updates? Contact your OEM for more information. If I have installed the latest security updates released by Microsoft, do I have to do anything else? Am I fully protected if I install only Windows security updates?
Why is it so important to update my device to the latest feature release? My antivirus software is not listed as being compatible. What should I do? Recommendations: Make sure that your devices are up-to-date by having the latest security updates from Microsoft and your hardware manufacturer. Intel has identified restart issues with microcode on some older processors. I have not installed any of the Security Only updates.
If I install the latest Security Only updates, am I protected from the vulnerabilities described? If I apply any of the applicable February security updates, will they disable the protections for CVE like security update did? The image means that your system received patches for the Meltdown bug, but has received incomplete patches for the Spectre bug.
This was to be expected, as Google said yesterday that Spectre is harder to exploit, but also harder to patch. What the red text means is that you need additional chipset firmware updates. Depending on your computer's age, some OEM might not make these firmware updates available, meaning you'll be stuck with an incomplete Spectre patch. When the output is all green and each item is set to True, as shown above, then you are now protected from these attacks.
Once you're done, remember to set the Powershell execution police back to a restricted mode, which may be useful in mitigating malware attacks that use Powershell to run malicious commands. New Windows 11 build fixes Microsoft Installer issue breaking apps. Microsoft increases Windows 11 rollout pace to Windows 10 devices. Microsoft starts rolling out a new Windows 11 media player. Microsoft: New security updates trigger Windows Server auth issues. Some Windows 11 apps are broken due to expired certificate.
Thanks for the info. Good article the AV list is quite useful. Haven't had a chance to run through this yet; but thanks to CC, LA and BC for offering this attempt to clarify what they and most of us , realize is a dynamic, sometimes contradictory, and hastily cobbled together set of recommendations - for an extremely broad spectrum of use-cases.
I'm sure their ears will be ringing with people complaining about their bleeping computer! When I ran the Powerscript I got this info "You are installing the modules from an untrusted repository. Are you sure you want to install the modules from 'PSGallery'? The article says, "The simplest way to go about this is if you can go to the Windows Update section every day and press the "Check for updates" button and you'll receive the update after your AV product creates that registry key.
I'm totally lost here. How can the. I'm assuming what this really means is that we are to install this. Is that what this means? Starkman, the. Microsoft is only looking for that reg in order to allow you to install the patch. The next question, then, is in that I have the free version of Avira, and it's a well-known antivirus software, how can I know if the free version of Avira is compatible; they don't offer a way means of contacting them, as far as I can tell, unless you have the paid version.
Thanks again. According to the AV spreadsheet by Gossi, Avira v Make sure to update it all the way and check their own statement. So I guess we're good. I just don't know how to check the version of the free edition, though, but it's all good. Madre mia! Why don't MS add that reg key via their update?
I have a 2nd generation Intel i5 in my laptop, is it affected by this loophole? That doesnt exactly ansnwer my question; does this mean my laptop is possibly affected by this or not? I know yes its an i5, but its a Second Generation i5, not a 8th or 7th or whatever generation they're coming out with now.
Are older generations affected? My understanding is that the flaws are present in nearly all CPUs built since the s. Meltdown applies mostly to Intel CPUs. Spectre applies in some form to everything with "speculative execution. However, it won't be patched. The Windows and Linux patches for Meltdown might be applied, but Intel will do nothing because reading between their press release lines it's more than 5 years old.
Plus, the OEM of your laptop would have to provide the firmware fixes, and nobody will provide that for a computer more than years old. I certainly don't expect it, for instance, from Gigabyte for my year-old desktop even though the CPU has the features implicated. I'll be happy at this point if MS keeps supporting Win10 on it. I had trouble getting the Powershell module installed. Once I'd managed it via, eventually, downloading some package installer thing from Microsoft , Powershell tells me my system is unpatched - though I thought it was patched.
So now I am confused. MS add this reg. A cleaner option that most tech engineers once recommended was to: Backup any important license keys in your Anti Virus or Internet Security application if you don't have them already.
Backup any personal data in case of system crash - from what I see it won't crash as it won't install unless compatible, but it is still recommended to always have backups. Then Restart, disregarding any security messages about this momentarily.
In the 'old days' we generally all use to uninstall our antivirus applications first, especially on BIG MS security updates. Maybe those old days are gone? Or maybe that type of support is obsolete? Probably, as I've been away for a few years :.
I installed all patches. Could you help me to understand it please? Shouldn't you set the Set-ExecutionPolicy Bypass back to restricted when done? I think it opens up other holes. It is specified at the end bottom of the article. Yes, seems VERY irresponsible to hand-hold everyone through the exact steps needed - but then to just drop the ball on telling people the exact command to set the Powershell Script Execution Policy BACK to the restricted mode it was on.
Also, run: Get-ExecutionPolicy And confirm that the response comes back as: Restricted If it still says 'Bypass', you need to re-enter the 'Set-ExecutionPolicy Restricted' command and make sure to answer Y and enter to the prompt. An attacker must be able to execute code locally on a system to exploit this vulnerability, similar to the other speculative execution vulnerabilities.
The information that could be disclosed in the register state depends on the code executing on a system and whether any code stores sensitive information in FP register state. At this time only Intel processors are protected, AMD fixes are still in the works.
This vulnerability was disclosed on July 10, At this time, it does not appear that Microsoft software has flaws for this vulnerability, but more investigation is underway. The Intel version of the vulnerability indicates that microcode updates are not needed. Microsoft has indicated that the impact to Azure for the Intel mitigation will be minimal, but if you see a performance hit in Azure, you should enable Azure accelerated networking Windows , Linux.
Be aware that at this time virtual server machines in Azure are built with the May releases and thus are vulnerable to several of these vulnerabilities as patches were only released in July.
Review your VMs for patching status. You need to review the impact of Spectre and Meltdown on databases as well as your operating systems. Microsoft has released guidance for SQL Server as well as guidance for ensuring that developed software is designed to prevent speculative execution side channel vulnerabilities in software.
For SQL Server, you might need to review additional mitigation techniques as noted. Evaluate what SQL Server extensibility features you might be using and what additional mitigation steps you might need to take. These include:. As Microsoft states , the impact for most consumer devices might not be noticeable. Again, actual performance impact depends on the hardware generation and implementation by the chip manufacturer, among other factors.
Benchmark testing has shown an impact of 5 percent to 6 percent. Microsoft indicated the following impact:. Here are the latest Insider stories.
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