What is CVE-2026-27442?

CVE-2026-27442 is a high-severity vulnerability in Seppmail Secure Email Gateway, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-03-04.

How severe is CVE-2026-27442?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Seppmail Secure Email Gateway

CVE-2026-27442

The GINA web interface in SEPPmail Secure Email Gateway before version 15.0.1 does not properly check attachment filenames in GINA-encrypted emails, allowing an attacker to access files on the gateway.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (34.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Seppmail Secure Email Gateway — versions 0
Seppmail

Weakness classification (CWE)

CWE-22 — Path Traversal

References

vulnerability@ncsc.ch (release-notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-27442?: CVE-2026-27442 is a high-severity vulnerability in Seppmail Secure Email Gateway, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-03-04.
How severe is CVE-2026-27442?: High severity. CVSS v3 base score is 7.5 out of 10.