Description
SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control trusted headers.
References (1)
Core 1
Core References
Various Sources release-notes
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure
Scores
CVSS v3
7.5
EPSS
0.0022
EPSS Percentile
12.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (1)
seppmail/seppmail
< 15.0.1
Published
Mar 04, 2026
Tracked Since
Mar 04, 2026