🛡️ CVE-2025-52373 — hmailserver

🟡 CVSS 4.6 — Medium ⚠️ Exploit Public CWE-321 NVD
4.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Use of hardcoded cryptographic key in BlowFish.cpp in hMailServer 5.8.6 and 5.6.9-beta allows attacker to decrypt passwords used in database connections from hMailServer.ini config file.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2025-52373 is classified as CWE-321: Use of Hard-coded Cryptographic Key. The product uses a hard-coded, unchangeable cryptographic key.

Affected software

CVE-2025-52373 is recorded against 1 package.

  • hmailserver

Timeline and source

Published on 21 July 2025 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

github.com
github.com
github.com

Details

Severity MEDIUM
CVSS Score 4.6
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
CWE CWE-321
Public Exploit ⚠️ Yes
Source NVD
Published 2025-07-21
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
hmailserver — —

Similar Threats

Exploit Protection

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CVE-2025-52373 carries CVSS 4.6 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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