CVE-2021-27085: Microsoft Internet Explorer Remote Code Execution Vulnerability
CVE-2021-27085 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03
Microsoft Internet Explorer 11 contains an unspecified vulnerability that allows for remote code execution when a user visits a specially crafted website. The vulnerability is known to be exploited in the wild and affects various versions of Windows 10 and Windows Server 2019.
Yes. CVE-2021-27085 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-27085?
Critical severity, with a CVSS score of 8.8, published 3 November 2021.
Which products and versions are affected?
Microsoft Internet Explorer 11 11; Microsoft Windows 10 1803, 1809, 1909, 2004, 20H2; Microsoft Windows Server 2019 -.
Is there a fix for CVE-2021-27085?
A patch was published on 2021-11-03: Vendor advisory and patch information published by Microsoft Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-27085 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2021-27085?
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 11
Microsoft Windows 10 1803, 1809, 1909, 2004, 20H2
Microsoft Windows Server 2019 -
Timeline
2021-03-19: disclosed: Initial analysis by NIST
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2021-11-03: patched: Vendor advisory and patch information published by Microsoft
2021-11-03: exploited: Reported as exploited in the wild in CISA KEV catalog