Multiple serious vulnerabilities have been found in Microsoft Edge and Internet Explorer. Malicious users can exploit these vulnerabilities to execute arbitrary code, perform privilege escalation and obtain sensitive information.

1. An information disclosure vulnerabilities can be exploited remotely via speculative execution side-channel attack to obtain sensetive information;
2. Multiple scripting engine memory corruption vulnerabilities in Microsoft Edge and Microsoft Internet Explorer can be exploited remotely via a specially designed website to execute arbitrary code;
3. Multiple information disclosure vulnerabilities in Microsoft Edge and Microsoft Internet Explorer can be exploited remotely via a specially designed website to obtain sensitive information;
4. An elevation of privilege vulnerability in Microsoft Edge can be exploited remotely via a specially designed website to perform privilege escalation.

All Kaspersky Lab business and consumer products are compatible with the update. Our database update on 28th December enables the compatibility flag, recommended by Microsoft, to allow devices to apply the update from 3rd January.Further details of Kaspersky Lab compatibility with Microsoft security updates are on our Support page.Our recommendation remains that for optimum protection against vulnerabilities, software and operating system updates should be installed as soon as possible.More about the CPU vulnerabilities can be found on the Kaspersky Lab blog here and on the announcement website here.

Microsoft Edge
Internet Explorer 11
Internet Explorer 10
Internet Explorer 9

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel). In addition, you may also need to install firmware updates from manufacturer of your device for increased protection. Check for relevant updates with manufacturer of your device.

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The following public exploits exists for this vulnerability:

https://www.exploit-db.com/exploits/43491

https://www.exploit-db.com/exploits/43522

https://www.exploit-db.com/exploits/43710

https://www.exploit-db.com/exploits/44075

https://www.exploit-db.com/exploits/43715

https://www.exploit-db.com/exploits/43717

https://www.exploit-db.com/exploits/43723

https://www.exploit-db.com/exploits/43718

https://www.exploit-db.com/exploits/43720

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.