# CVE-2019-0752: Microsoft Internet Explorer Type Confusion Vulnerability

Source: https://junglewise.ai/threats/cve-2019-0752-microsoft-internet-explorer-type-confusion-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-02-15. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2019-0752 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2022-02-15

A type confusion vulnerability (CWE-843) in the Microsoft Internet Explorer scripting engine allows for remote code execution. The flaw occurs due to the way the engine handles objects in memory, potentially leading to memory corruption.

Technologies: [Microsoft Edge](https://junglewise.ai/threats/technologies/edge), [Microsoft Internet Explorer](https://junglewise.ai/threats/technologies/internet-explorer). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2019-0752 exploited in the wild?** Yes. CVE-2019-0752 is known to be exploited in the wild, first recorded on 15 February 2022. Treat it as urgent.

**How severe is CVE-2019-0752?** Critical severity, with a CVSS score of 7.5, published 15 February 2022.

**Which products and versions are affected?** Microsoft Internet Explorer 11 11.

**Is there a fix for CVE-2019-0752?** 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-2019-0752 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2019-0752?** Check whether you run Microsoft Edge or 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

## Timeline

- 2019-04-09: advisory: MSRC advisory published
- 2022-02-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-02-15: disclosed: NVD publication date

## Related threats

- [Microsoft Edge out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-122518-out-of-bounds-read-in-microsoft-edge-chromium-based-allows-an)
- [Microsoft Edge privilege escalation via incorrect authorization](https://junglewise.ai/threats/cve-2026-69446-incorrect-authorization-in-microsoft-edge-chromium-based-allows)
- [Microsoft Edge use-after-free privilege elevation](https://junglewise.ai/threats/cve-2026-96203-use-after-free-in-microsoft-edge-chromium-based-allows-an)
- [Microsoft Edge heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96199-heap-based-buffer-overflow-in-microsoft-edge-chromium-based)
- [Microsoft Edge heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96198-heap-based-buffer-overflow-in-microsoft-edge-chromium-based)