CVE-2018-8373: Microsoft Scripting Engine Memory Corruption Vulnerability
CVE-2018-8373 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2022-03-25
A remote code execution vulnerability exists in the Microsoft Scripting Engine due to the way it handles objects in memory within Internet Explorer. An attacker could exploit this memory corruption (specifically an out-of-bounds write) to execute arbitrary code in the context of the current user.
Yes. CVE-2018-8373 is known to be exploited in the wild, first recorded on 25 March 2022. Treat it as urgent.
How severe is CVE-2018-8373?
Critical severity, with a CVSS score of 7.5, published 25 March 2022.
Which products and versions are affected?
Microsoft Internet Explorer 9; Microsoft Internet Explorer 10; Microsoft Internet Explorer 11.
Is there a fix for CVE-2018-8373?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2018-8373 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2018-8373?
Check whether you run Microsoft Internet Explorer Scripting Engine. 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 9
Microsoft Internet Explorer 10
Microsoft Internet Explorer 11
Timeline
2018-10-11: disclosed: Initial analysis by NIST
2022-03-25: kev added: Added to CISA Known Exploited Vulnerabilities Catalog