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NVD / CVE Program· CNA VulnCheck

CVE-2025-34396: MailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAINFY.DLL

Noroxi assessment

Priority: Monitor (action score 34/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.19% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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 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.

HighCVSS 8.5 · v4.0—No exploit No fix recorded
Published
Dec 9, 2025
Updated
Oct 14, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
8.5
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-34396

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mailenablemailenable

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mailenable mailenablebefore 10.54

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • MailEnable MailEnable

    • before 10.54affected

Same product

mailenable: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-44148Cross Site Scripting (XSS) vulnerability in MailEnable before v10 allows a remote attacker to execute arbitrary code via the failure.aspx co
    55Plan
  • CVE-2015-9280MailEnable before 8.60 allows XXE via an XML document in the request.aspx Options parameter.
    41Plan
  • CVE-2015-9278MailEnable before 8.60 allows Privilege Escalation because admin accounts could be created as a consequence of %0A mishandling in AUTH.TAB a
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2019-12927Jul 8, 2019 · MailEnable Enterprise Premium 10.23 was vulnerable to stored and reflected cross-site scripting (XSS) attacks.
    24Monitor
  • ← EarlierCVE-2022-42136Jan 13, 2023 · Authenticated mail users, under specific circumstances, could add files with unsanitized content in public folders where the IIS user had pe
    35Monitor
  • Later →CVE-2025-34397Dec 9, 2025 · MailEnable < 10.54 Reflected XSS in Message Parameter of Mobile/Compose.aspx
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-344171 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAISO.DLL
    34Monitor
  • CVE-2025-344181 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAIMF.DLL
    34Monitor
  • CVE-2025-344191 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAISM.DLL
    34Monitor
  • CVE-2025-344201 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAIAM.DLL
    34Monitor
  • CVE-2025-344211 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAISP.DLL
    34Monitor
  • CVE-2025-344221 days apartMailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAIPC.DLL
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-427 · Uncontrolled Search Path Element

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records