CVE-2026-27444

7.8 highEPSS 0.2%

High (7.8) in seppmail seppmail. EPSS 0.2% chance of exploitation in the next 30 days.

SEPPmail Secure Email Gateway before version 15.0.1 incorrectly interprets email addresses in the email headers, causing an interpretation conflict with other mail infrastructure that allows an attacker to fake the source of the email or decrypt it.

Severity

CVSS 4.0

7.8 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:H/SA:N

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-31)
CWE: CWE-436
Published: 2026-03-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

seppmail:seppmail

References

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure

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