CVE-2021-34480

Scripting Engine Memory Corruption Vulnerability

Description

Scripting Engine Memory Corruption Vulnerability

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34480	patch vendor advisory
http://packetstormsecurity.com/files/164121/Internet-Explorer-JIT-Optimization-Memory-Corruption.html	vdb entry third party advisory

What is the severity of CVE-2021-34480?: CVE-2021-34480 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34480?: To fix CVE-2021-34480, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34480 being actively exploited in the wild?: It is possible that CVE-2021-34480 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34480?: CVE-2021-34480 affects Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 21H1, Microsoft Windows 10 Version 2004, Microsoft Windows 10 Version 20H2, Microsoft Windows 10 Version 1507, Microsoft Windows 10 Version 1607, Microsoft Windows Server 2016, Microsoft Windows 7, Microsoft Windows 7 Service Pack 1, Microsoft Windows 8.1, Microsoft Windows Server 2008 R2 Service Pack 1, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2.