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MailenableApplication

CVE-2025-34417

HIGH · 7.8 CVSS v3.1 Published 2025-12-10
Fix available
A fix is available. Upgrade to 10.54 or later.
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
MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability that can lead to local arbitrary code execution. The MailEnable administrative executable attempts to load MEAISO.DLL from its installation directory without sufficient integrity validation or a secure search order. A local attacker with write access to that directory can plant a malicious MEAISO.DLL, which is then loaded when the executable starts, resulting in execution of attacker-controlled code with the privileges of the process.

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

MailEnable administrative executable attempts to load MEAISO.DLL from its installation directory without sufficient integrity validation or secure DLL search order. A local attacker with write access to the MailEnable installation directory can plant a malicious MEAISO.DLL that gets loaded when the executable starts, resulting in execution of attacker-controlled code with the process privileges.

MitigationUpgrade to MailEnable version 10.54 or later which contains the fix. Alternatively, restrict filesystem permissions on the MailEnable installation directory to prevent unauthorized write access by non-privileged users.

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
MailenableApplication
Affected:< 10.54

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. Locate the MailEnable installation directory
    Look for MailEnable in default locations such as C:\Program Files\MailEnable or C:\Program Files (x86)\MailEnable, or check the Windows registry under HKEY_LOCAL_MACHINE\SOFTWARE\MailEnable for the InstallDir value.
    Affected if Cannot locate MailEnable installation or registry key does not exist.
  2. Identify the MailEnable version
    Check the version of the MailEnable administrative executable (typically MEAdmin.exe or MailEnableAdmin.exe) in the installation directory. Right-click the executable, select Properties, and view the Details tab for the File Version. Alternatively, check the registry key HKEY_LOCAL_MACHINE\SOFTWARE\MailEnable\Version.
    Affected if The installed version is any version prior to 10.54 (for example, 10.53, 10.52, 10.51, etc.).
  3. Verify if MEAISO.DLL exists in the installation directory
    Navigate to the MailEnable installation directory and look for a file named MEAISO.DLL. Use Command Prompt: dir "C:\Program Files\MailEnable\MEAISO.DLL" or the equivalent path.
    Affected if MEAISO.DLL is present in the MailEnable installation directory.
  4. Check filesystem permissions on the MailEnable installation directory
    Right-click the MailEnable installation folder, select Properties, go to the Security tab, and review the permissions for users and groups. Use icacls from Command Prompt: icacls "C:\Program Files\MailEnable" to list all granted permissions.
    Affected if Non-privileged users or groups (such as Users orAuthenticated Users) have Write or Modify permissions on the installation directory.

You are affected if MailEnable version is below 10.54 AND non-privileged users have write access to the installation directory where MEAISO.DLL could be planted.

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
Upgrade available Upgrade to 10.54 or later
Fixed in 10.54
Interim mitigation

Upgrade to MailEnable version 10.54 or later which contains the fix. Alternatively, restrict filesystem permissions on the MailEnable installation directory to prevent unauthorized write access by non-privileged users.

Recommended fix High confidence

10.54

  1. 1. Back up the entire MailEnable installation directory and its configuration files before proceeding
  2. 2. Stop all MailEnable services (or at minimum the administrative services) to ensure no files are locked during upgrade
  3. 3. Download the MailEnable version 10.54 installer from the official MailEnable website (mailenable.com)
  4. 4. Run the installer and follow the on-screen prompts to upgrade the existing installation
  5. 5. After installation completes, verify the upgrade was successful by checking the installed version
  6. 6. Start the MailEnable services that were stopped in step 2
  7. 7. Verify the administrative console launches without errors and the MEAISO.DLL is loaded from the correct (secure) location
Caveat Standard minor version upgrade - review release notes for any configuration changes or deprecated features

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

Fix this in Mailenable Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,440
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,304.

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-2025-34417 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