CVE-2025-34421Hinoki check available

Local code execution via planted MEAISP.DLL

Published Dec 10, 2025 · Updated Dec 10, 2025

Uncontrolled DLL loading in MailEnable before 10.54 allows local users to execute arbitrary code through a planted MEAISP.DLL. The administrative executable searches its installation directory for MEAISP.DLL without integrity validation or a secure DLL search order. Write access to that directory is required; a planted library runs with the administrative process's privileges and can alter data or interrupt service.

CVSS severity8.5
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uncontrolled DLL loading in MailEnable before 10.54 allows local users to execute arbitrary code through a planted MEAISP.DLL. The administrative executable searches its installation directory for MEAISP.DLL without integrity validation or a secure DLL search order. Write access to that directory is required; a planted library runs with the administrative process's privileges and can alter data or interrupt service.

The record

CVE
CVE-2025-34421
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
MailEnable
Product
MailEnable
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <10.54

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MailEnable · MailEnableversion=0 <10.54

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001DLL Search Order Hijacking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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