CVE-2020-0674: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

CVE-2020-0674 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2021-11-03

A remote code execution vulnerability exists in Microsoft Internet Explorer's scripting engine due to improper handling of objects in memory. An attacker could exploit this memory corruption (specifically a use-after-free) to execute arbitrary code in the context of the current user.

Technologies: Microsoft Internet Explorer. Vendors: Microsoft.

Quick answers

Is CVE-2020-0674 exploited in the wild?
Yes. CVE-2020-0674 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-0674?
Critical severity, with a CVSS score of 7.5, published 3 November 2021.
Which products and versions are affected?
Microsoft Internet Explorer 11; Microsoft Internet Explorer 10; Microsoft Internet Explorer 9.
Is there a fix for CVE-2020-0674?
A patch was published on 2020-02-11: Security updates released by Microsoft Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2020-0674 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2020-0674?
Check whether you run Microsoft Internet Explorer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Internet Explorer 11
  • Microsoft Internet Explorer 10
  • Microsoft Internet Explorer 9

Timeline

  • 2020-01-17: disclosed: Initial advisory release by Microsoft
  • 2020-02-11: patched: Security updates released by Microsoft
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Confirmed as exploited in the wild per CISA KEV catalog

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