CVE-2019-0752 Microsoft CVE debrief

Who should care

Security and endpoint teams responsible for Microsoft environments, especially any organization that still uses or must support Internet Explorer or legacy Windows systems. Patch management, vulnerability management, and incident response teams should also track this CVE because it is on CISAs KEV list.

Technical summary

The supplied corpus identifies CVE-2019-0752 as a type confusion vulnerability in Microsoft Internet Explorer. CISAs KEV catalog flags it as known exploited and notes known ransomware campaign use. The official defensive action in the KEV record is to apply updates per vendor instructions.

Defensive priority

High. Inclusion in CISAs KEV catalog indicates known exploitation, and the record also notes known ransomware campaign use. Prioritize remediation according to your patching and exposure risk process.

Recommended defensive actions

• Apply Microsoft updates per vendor instructions for CVE-2019-0752.
• Verify whether Internet Explorer is still present or enabled in your environment and track any systems that depend on it.
• Prioritize remediation on systems with higher exposure or broader user access.
• Confirm patch deployment and remediation status through vulnerability management reporting.

Evidence notes

This debrief uses only the supplied corpus and official links. The key evidence comes from the CISA KEV source item, which identifies the vendor as Microsoft, the product as Internet Explorer, the vulnerability name as Microsoft Internet Explorer Type Confusion Vulnerability, the KEV date added as 2022-02-15, the due date as 2022-08-15, and the note Apply updates per vendor instructions. The source also marks known ransomware campaign use as Known. The CVE and NVD links were provided as official reference points; however, the supplied corpus does not include a CVSS score or exploit mechanics.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.