Description
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.
References (3)
Scores
CVSS v3
4.6
EPSS
0.0003
EPSS Percentile
8.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-321
Status
published
Products (2)
hmailserver/hmailserver
5.6.9 beta
hmailserver/hmailserver
5.8.6
Published
Jul 21, 2025
Tracked Since
Feb 18, 2026