CVE-2019-1367 Microsoft CVE debrief

Who should care

Administrators, endpoint security teams, and IT operations staff responsible for Windows systems where Microsoft Internet Explorer is installed or enabled, especially environments that track CISA KEV-listed vulnerabilities.

Technical summary

The available source material identifies a memory corruption issue in the Microsoft Internet Explorer scripting engine. CISA’s KEV catalog lists the CVE as known exploited and records known ransomware campaign use. The supplied remediation guidance is limited to applying updates per vendor instructions; no further technical exploit details were provided in the source corpus.

Defensive priority

High. This is a CISA KEV-listed vulnerability with known exploitation and known ransomware campaign use, so remediation should be treated as urgent.

Recommended defensive actions

• Apply Microsoft updates per vendor instructions as soon as possible.
• Prioritize remediation for systems where Internet Explorer is installed or enabled.
• Validate exposure with asset inventory and confirm patch deployment across affected endpoints.
• Track this CVE as a known-exploited issue and include it in ransomware-focused defense workflows.
• Use the CISA KEV due date as a remediation target for any remaining exposed systems.

Evidence notes

This debrief is based only on the supplied official records and metadata: the CISA KEV feed entry, the official CVE record link, and the NVD detail link. The source corpus identifies the issue as "Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability," marks it as known exploited, notes known ransomware campaign use, and provides the required action "Apply updates per vendor instructions." The supplied timing fields list 2021-11-03 as the KEV date added and 2022-05-03 as the due date.

Official resources