VULNERABILITY INTELLIGENCE

CVE-2026-27443

CVSS score7.5 HIGH
EPSS probability0.25%
CISA KEVNot currently listed
Published2026-03-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • vulnerability@ncsc.ch: CWE-20
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references