CVE-2025-52374

low-risk
Published 2025-07-21

Use of hardcoded cryptographic key in Encryption.cs in hMailServer 5.8.6 and 5.6.9-beta allows attacker to decrypt passwords to other servers from hMailAdmin.exe.config file to access other hMailServer admin consoles with configured connections.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.6/10 Medium
NETWORK / LOW complexity

Affected Products (2)

Hmailserver
Hmailserver

Affected Vendors

Hmailserver

References (3)

Product https://github.com/hmailserver/hmailserver
Exploit https://github.com/mojibake-dev/hMailEnum
Exploit https://github.com/mojibake-dev/mojibake-CVE/blob/main/hMailServer/CVE-2025-5237...
26
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low