KLA12143
Multiple vulnerabilities in Microsoft Browser

Multiple vulnerabilities were found in Microsoft Browser. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A use after free vulnerability in Blink can be exploited to cause denial of service or execute arbitrary code.
2. A validation of untrusted input vulnerability in V8 for x86_64 can be exploited to bypass security restrictions.

The following public exploits exists for this vulnerability:

https://github.com/security-dbg/CVE-2021-21220

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

Microsoft Edge (Chromium-based)

Install necessary updates from the Settings and more menu, that are listed in your About Microsoft Edge page (Microsoft Edge About page usually can be accessed from the Help and feedback option)
Microsoft Edge update settings

CVE-2021-21206
CVE-2021-21220