What is CVE-2025-52373?

CVE-2025-52373 is a medium-severity vulnerability in Hmailserver, classified under Use of Hard-coded Cryptographic Key. CVSS score: 4.6/10. Published 2025-07-21.

How severe is CVE-2025-52373?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Is CVE-2025-52373 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Hmailserver

CVE-2025-52373

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.

EPSS: 0.003 (21.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Hmailserver — versions 5.6.9, 5.8.6
N/a — versions n/a

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-52373?: CVE-2025-52373 is a medium-severity vulnerability in Hmailserver, classified under Use of Hard-coded Cryptographic Key. CVSS score: 4.6/10. Published 2025-07-21.
How severe is CVE-2025-52373?: Medium severity. CVSS v3 base score is 4.6 out of 10.
Is CVE-2025-52373 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.