Seppmail CVEs & Vulnerabilities

9 CVEs affecting Seppmail products, tracked from the National Vulnerability Database, with CVSS/EPSS scores and exploitation status.

Most Affected Products

seppmail 9
CVE-2026-2743CRITICAL

Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). This issue affects SeppMail: 15.0.2.1 and before

5 Mar 2026
9.8
CVSS
CVE-2026-2748MEDIUM

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing.

4 Mar 2026
5.3
CVSS
CVE-2026-2747HIGH

SEPPmail Secure Email Gateway before version 15.0.1 decrypts inline PGP messages without isolating them from surrounding unencrypted content, allowing exposure of sensitive information to an unauthorized actor.

4 Mar 2026
7.5
CVSS
CVE-2026-2746MEDIUM

SEPPmail Secure Email Gateway before version 15.0.1 does not properly communicate PGP signature verification results, leaving users unable to detect forged emails.

4 Mar 2026
5.3
CVSS
CVE-2026-27445MEDIUM

SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing.

4 Mar 2026
5.3
CVSS
CVE-2026-27444HIGH

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.

4 Mar 2026
7.5
CVSS
CVE-2026-27443HIGH

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.

4 Mar 2026
7.5
CVSS
CVE-2026-27442HIGH

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.

4 Mar 2026
7.5
CVSS
CVE-2026-27441CRITICAL

SEPPmail Secure Email Gateway before version 15.0.1 insufficiently neutralizes the PDF encryption password, allowing OS command execution.

4 Mar 2026
9.8
CVSS
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