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NULL Pointer DereferenceWeakness · CWE-476

CVE-2024-55511

HIGH · 7.8 CVSS v3.1 Published 2025-01-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
Zero-click

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
A null pointer dereference vulnerability in Macrium Reflect prior to 8.1.8017 allows a local attacker to cause a system crash or potentially elevate their privileges via executing a specially crafted executable.

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

Macrium Reflect before version 8.1.8017 contains a null pointer dereference vulnerability that can be triggered by a specially crafted executable. A local attacker can exploit this to cause a denial of service (system crash) or potentially elevate privileges to execute code with higher permissions.

MitigationUpgrade Macrium Reflect to version 8.1.8017 or later to remediate this vulnerability.

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

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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. Verify Macrium Reflect is installed
    Look for the installation directory at C:\Program Files\Macrium\Reflect or check the Windows registry under HKLM\SOFTWARE\Macrium\Reflect for the InstallPath value
    Affected if The software is present on the system
  2. Locate the main executable
    Navigate to the installation directory and identify the main executable (commonly Reflect.exe or ReflectService.exe)
    Affected if The executable exists in the expected location
  3. Retrieve the installed version
    Right-click the executable, select Properties, and check the Details tab for the Product Version field, or use PowerShell: (Get-Item 'C:\Program Files\Macrium\Reflect\Reflect.exe').VersionInfo.ProductVersion
    Affected if A version number is returned from the executable
  4. Compare version against the affected range
    Compare the installed version number to 8.1.8017. Versions before 8.1.8017 (such as 8.1.xxxx, 8.0.xxxx, 7.xxxx) are affected. Note that version 8.1.8017 and later are not vulnerable
    Affected if The installed version is lower than 8.1.8017 (for example, 8.1.7500, 8.0.5734, or 7.5.501)
  5. Check for running processes
    Open Task Manager or use PowerShell: Get-Process | Where-Object {$_.ProcessName -like '*Reflect*'} to see if Macrium Reflect components are currently running
    Affected if Macrium Reflect processes are active on the system

A user is affected if Macrium Reflect is installed with a version lower than 8.1.8017, as versions before this threshold contain the null pointer dereference vulnerability that could lead to system crash or privilege escalation.

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

Upgrade Macrium Reflect to version 8.1.8017 or later to remediate this vulnerability.

Recommended fix Moderate confidence

Macrium Reflect 8.1.8017 or later

  1. 1. Identify the current version of Macrium Reflect installed on the system
  2. 2. Download Macrium Reflect version 8.1.8017 or later from the official Macrium website (updates.macrium.com) or their official download page
  3. 3. Close any running instances of Macrium Reflect
  4. 4. Run the installer for the new version
  5. 5. Follow the on-screen installation prompts to complete the upgrade
  6. 6. Restart the system if prompted by the installer
  7. 7. Verify the installed version is 8.1.8017 or higher
Caveat Point upgrades typically retain settings; however, backup verify and test after upgrade is recommended

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

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

Scan for this in your stack

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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-2024-55511 in production — separate from our analysis above.

No notes yet

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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