dbcve.org
True ImageApplication · Acronis

CVE-2021-44206

HIGH · 7.3 CVSS v3.1 Published 2022-02-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
73/100
Remediation priority · Elevated

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Local privilege escalation due to DLL hijacking vulnerability in Acronis Media Builder service. The following products are affected: Acronis Cyber Protect Home Office (Windows) before build 39612, Acronis True Image 2021 (Windows) before build 39287

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A DLL hijacking vulnerability in the Acronis Media Builder service allows a local attacker to execute arbitrary code with elevated privileges by placing a malicious DLL in a location where the service loads DLLs without proper validation.

MitigationUpdate Acronis Cyber Protect Home Office to build 39612 or later, and Acronis True Image 2021 to build 39287 or later, to obtain the patched versions that properly validate DLL loading paths.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
True ImageApplication
Affected:= 2021
Cyber Protect Home OfficeApplication
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Acronis product
    Check installed programs for 'Acronis True Image 2021' or 'Acronis Cyber Protect Home Office' using Add/Remove Programs or similar system utility
    Affected if Either Acronis True Image 2021 or Acronis Cyber Protect Home Office is installed
  2. Determine product version
    Locate the installed version information for the Acronis product (typically available in the application itself, installer properties, or product documentation)
    Affected if Version is Acronis True Image 2021 (any build) or Acronis Cyber Protect Home Office (any version)
  3. Check if Media Builder service exists
    Look for a service named 'Acronis Media Builder' or similar in Windows Services (services.msc) or via command: sc query type= service state= all | findstr -i media
    Affected if The Acronis Media Builder service is present on the system
  4. Compare against fixed builds
    Note the exact build number of the installed product (for True Image 2021 compare against build 39287, for Cyber Protect Home Office compare against build 39612)
    Affected if Installed build is lower than 39287 for True Image 2021, or lower than 39612 for Cyber Protect Home Office, and the Media Builder service exists

System is affected if Acronis True Image 2021 or Acronis Cyber Protect Home Office is installed with the Media Builder service present and the build version is below the fixed thresholds (39287 or 39612 respectively).

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Acronis Cyber Protect Home Office to build 39612 or later, and Acronis True Image 2021 to build 39287 or later, to obtain the patched versions that properly validate DLL loading paths.

Recommended fix High confidence

Acronis True Image 2021 build 39287+ or Acronis Cyber Protect Home Office build 39612+

  1. Identify which Acronis product is installed: True Image 2021 or Cyber Protect Home Office (Windows)
  2. Check the current installed build version of the product
  3. For True Image 2021 users: Upgrade to build 39287 or later
  4. For Cyber Protect Home Office users: Upgrade to build 39612 or later
  5. Verify the upgrade was successful by checking the new build version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in True Image Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-44206 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-44206 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data