CVE-2025-34396
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 · uneditedMailEnable 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 MEAINFY.DLL from its application directo without sufficient integrity validation or secure search order. If the DLL is missing or attacker-writable locations in the search path are used, a local attacker with write permissions to the directory can plant a malicious MEAINFY.DLL. When the executable is launched, it loads the attacker-controlled library and executes code with the privileges of the process, enabling local privilege escalation when run with elevated rights.
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 confidenceMailEnable versions prior to 10.54 have an unsafe DLL loading vulnerability where the administrative executable attempts to load MEAINFY.DLL from its application directory without validating the DLL's integrity or using secure search order. A local attacker with write permissions to the directory can plant a malicious DLL that will be loaded and executed with the privileges of the administrative process, enabling local privilege escalation.
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< 10.54CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Determine installed MailEnable versionUse the MailEnable administrative interface, or check the version information of the MailEnable services executable, or run a version query command provided by MailEnableAffected if The installed version is lower than 10.54
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Locate the MailEnable application directoryIdentify the directory where MailEnable administrative binaries are installed, typically where MEINFY.EXE or similar administrative executables resideAffected if The directory cannot be determined or does not exist
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Check write permissions on the application directoryInspect file system permissions on the MailEnable application directory to determine if non-privileged users or groups have write accessAffected if Users without administrative rights can write files to the directory where administrative executables run
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Verify presence of MEAINFY.DLL in application directoryCheck if MEAINFY.DLL exists in the same directory as the administrative executableAffected if MEAINFY.DLL is present in the application directory and can be replaced by an attacker
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Check if administrative tools run with elevated privilegesReview how MailEnable administrative processes are launched and whether they execute with elevated or service account privilegesAffected if Administrative tools run with elevated privileges and the application directory is writable
You are affected if the installed MailEnable version is below 10.54 AND the application directory allows write access by non-administrative users, enabling potential DLL hijacking.
Generated from the published advisory. Verify against your own configuration.
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 · scoped10.54
Update to MailEnable version 10.54 or later to obtain the vendor patch. If immediate patching is not possible, restrict write permissions on the MailEnable application directory to prevent unauthorized DLL placement, and ensure administrative tools are not run with elevated privileges unless absolutely necessary.
10.54
- 1. Back up the current MailEnable installation and configuration before proceeding with the upgrade.
- 2. Download the latest MailEnable version 10.54 or later from the official MailEnable website (mailenable.com).
- 3. Stop all MailEnable services to ensure a clean upgrade process.
- 4. Run the MailEnable installer and follow the on-screen prompts to upgrade the installation.
- 5. After installation completes, verify that the MEAINFY.DLL is properly installed in the correct application directory with correct permissions.
- 6. Start MailEnable services and confirm the administrative console launches without errors.
- 7. Verify the installed version matches 10.54 or later using the MailEnable administrative interface or version check.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-34396 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-34396 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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