CVE-2025-34427

Credential takeover via plaintext AUTH.TAB storage

Published Dec 10, 2025 · Updated Dec 10, 2025

Cleartext credential storage in MailEnable before 10.54 allows local users to recover user and administrative passwords from AUTH.TAB. AUTH.TAB stores user and super-admin passwords as plaintext while filesystem permissions allow low-privileged authenticated accounts to read the file. Successful access exposes every stored mailbox credential and permits account takeover through MailEnable's POP3, SMTP, webmail, and administration services.

CVSS severity8.4
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in MailEnable before 10.54 allows local users to recover user and administrative passwords from AUTH.TAB. AUTH.TAB stores user and super-admin passwords as plaintext while filesystem permissions allow low-privileged authenticated accounts to read the file. Successful access exposes every stored mailbox credential and permits account takeover through MailEnable's POP3, SMTP, webmail, and administration services.

The record

CVE
CVE-2025-34427
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
MailEnable
Product
MailEnable
Classifications
CWE-312, T1555
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

8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-312Cleartext Storage of Sensitive Information
T1555Credentials from Password Stores

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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