CVE-2025-34420

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 MEAIAM.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 MEAIAM.DLL, which is then loaded on execution, resulting in attacker-controlled code running with the privileges of the process.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://mailenable.com/Standard-ReleaseNotes.txt	Release Notes
https://www.mailenable.com/	Product
https://www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meaiam-dll	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mailenable:mailenable:*:*:*:*:standard:*:*:*

History

14 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) MailEnable versiones anteriores a?10.54 contienen una vulnerabilidad de carga insegura de DLL que puede llevar a ejecución local de código arbitrario. El ejecutable administrativo de MailEnable intenta cargar MEAIAM.DLL desde su directorio de instalación sin suficiente validación de integridad ni un orden de búsqueda seguro. Un atacante local con acceso de escritura a ese directorio puede colocar un MEAIAM.DLL malicioso, que luego se carga al ejecutarse, resultando en código controlado por el atacante que se ejecuta con los privilegios del proceso.

Information

Published : 2025-12-10 16:16

Updated : 2026-10-14 21:10

NVD link : CVE-2025-34420

Mitre link : CVE-2025-34420

CVE.ORG link : CVE-2025-34420

JSON object : View

Products Affected

mailenable

mailenable

CWE

CWE-427

Uncontrolled Search Path Element

{"id": "CVE-2025-34420", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-34420", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2025-12-10T16:57:05.610068Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.5, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "MailEnable", "product": "MailEnable", "versions": [{"status": "affected", "version": "0", "lessThan": "10.54", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2025-12-10T16:16:25.563", "references": [{"url": "https://mailenable.com/Standard-ReleaseNotes.txt", "tags": ["Release Notes"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.mailenable.com/", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meaiam-dll", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-427"}]}], "descriptions": [{"lang": "en", "value": "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 MEAIAM.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 MEAIAM.DLL, which is then loaded on execution, resulting in attacker-controlled code running with the privileges of the process."}, {"lang": "es", "value": "MailEnable versiones anteriores a?10.54 contienen una vulnerabilidad de carga insegura de DLL que puede llevar a ejecuci\u00f3n local de c\u00f3digo arbitrario. El ejecutable administrativo de MailEnable intenta cargar MEAIAM.DLL desde su directorio de instalaci\u00f3n sin suficiente validaci\u00f3n de integridad ni un orden de b\u00fasqueda seguro. Un atacante local con acceso de escritura a ese directorio puede colocar un MEAIAM.DLL malicioso, que luego se carga al ejecutarse, resultando en c\u00f3digo controlado por el atacante que se ejecuta con los privilegios del proceso."}], "lastModified": "2026-10-14T21:10:00.183", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mailenable:mailenable:*:*:*:*:standard:*:*:*", "vulnerable": true, "matchCriteriaId": "E4DAB799-EDB6-48D7-A7FD-77D9910CB308", "versionEndExcluding": "10.54"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}