# CVE-2019-0541: Microsoft MSHTML Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2019-0541-microsoft-mshtml-remote-code-execution-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2019-0541 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03

A remote code execution vulnerability exists in the Microsoft MSHTML engine due to improper input validation. An attacker could exploit this by convincing a user to view specially crafted content, potentially leading to full system compromise.

Technologies: [Microsoft Mshtml](https://junglewise.ai/threats/technologies/mshtml). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2019-0541 exploited in the wild?** Yes. CVE-2019-0541 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2019-0541?** Critical severity, with a CVSS score of 8.8, published 3 November 2021.

**Which products and versions are affected?** Microsoft MSHTML engine; Microsoft Internet Explorer 9; Microsoft Internet Explorer 10; Microsoft Internet Explorer 11; and 3 more.

**Is there a fix for CVE-2019-0541?** 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-2019-0541 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2019-0541?** Check whether you run Microsoft Mshtml. 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 MSHTML engine
- Microsoft Internet Explorer 9
- Microsoft Internet Explorer 10
- Microsoft Internet Explorer 11
- Microsoft Office 365 ProPlus
- Microsoft Office Word Viewer
- Microsoft Excel Viewer

## Timeline

- 2019-01-08: advisory: MSRC advisory published (based on CVE ID year and bid date)
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2021-11-03: disclosed

## Related threats

- [Microsoft MSHTML Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2021-40444-microsoft-mshtml-remote-code-execution-vulnerability)