CVE-2025-52373Public exploit

Database password disclosure via hard-coded Blowfish key

Published Jul 21, 2025 · Updated Jul 22, 2025

Hard-coded cryptography in hMailServer 5.8.6 and 5.6.9-beta allows local users to decrypt database-connection passwords from hMailServer.ini. BlowFishEncryptor initializes Blowfish with a fixed source-code key and uses it to encrypt the Database Password value in the configuration file. Exploitation requires read access to hMailServer.ini; recovering the password grants access to the configured mail database, including stored email and account data.

CVSS severity4.6
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded cryptography in hMailServer 5.8.6 and 5.6.9-beta allows local users to decrypt database-connection passwords from hMailServer.ini. BlowFishEncryptor initializes Blowfish with a fixed source-code key and uses it to encrypt the Database Password value in the configuration file. Exploitation requires read access to hMailServer.ini; recovering the password grants access to the configured mail database, including stored email and account data.

The record

CVE
CVE-2025-52373
Published
Jul 21, 2025
Updated
Jul 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-321, T1552.001
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A: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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key
T1552.001Credentials In Files

Public exploit references

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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